Lichens of Gomera (Flechten Gomeras)
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Between 1999 and 2022 I have visited La Gomera for twenty times in order to photograph, to collect and to identify lichens. This results in ca. 1500 collections (capsules). Most of them are deposited in the Natural History Museum in Stuttgart (STU) - with the exception of those from 2018, 2019 and 2022. The latter are presented here gradually. I usually present several photos of a species in order to show its variability. The numbers in parentheses are my (provisional) herbar numbers. If there is a date instead of a herbarium number (for example, 180530), then there exists a photo only. The collection from 2018/19/22 are (and will be) deposited in the herbarium of the University of Tenerife. |
| Photos with an * were made in La Gomera. More (earlier) lichen photos of La Gomera can be seen in my Lichen Gallery. I am grateful to A. Aptroot, Th. Lumbsch, H. Sipman and V. Wirth, who gave me tips for the identication of some samples. Thanks also to B. Mattonet for preparing sections and slides. |
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| Copyright: Ulrich Kirschbaum |
Recent edition: January 2024
(Proposals for corrections are desired).
Flechtenbilder (A-F)
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Acarospora nodulosa (Dufour) Hue (53) Diploschistes diacapsis on the left side of the image (39). On soil. Thallus areolate; areoles up to 0.8 mm, pruinose; apothecia +- immersed (up to 1.5 mm diam.); disc epruinose, surrounded by a ring of true exciple; lecanorine (thalline) margin sometimes existent; epithecium brown; hymenium (80 µm) and hypothecium colourless. Asci (46 µm), multispored (> 50 per ascus); ascospores small (6.3-7.0 x 4.6-6.3 µm), colourless, simple, broadly ellipsoid to globose. Spot tests negative. During juvenil stage parasitic on Diploschistes diacapsis. E; Canary Islands; La Gomera-M; e of Chipude: Top of the Fortaleza. New to La Gomera. |
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Acarospora nodulosa (Dufour) Hue (53) On soil. E; Canary Islands; La Gomera-M; e of Chipude: Top of the Fortaleza. |
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Acarospora nodulosa (Dufour) Hue (53) On soil. E; Canary Islands; La Gomera-M; e of Chipude: Top of the Fortaleza. |
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Acarospora nodulosa (Dufour) Hue (53) On soil. Microscopic details. E; Canary Islands; La Gomera-M; e of Chipude: Top of the Fortaleza. |
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Anaptychia ciliaris * (L.) Körber (266) On volcanic rocks. Lobes tomentose, long, narrow (up to 2.5 mm wide), widening at the ends; with long, marginal cilia; lower surface concave, white (upper surface: grey to brownish); apothecia on short stalks, discs black, pruinose. Spot reactions negative. E; Canary Islands; La Gomera-MSW; ese of Chipude: hiking path between Fortaleza and Igualero; se of the little brook. |
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Anaptychia ciliaris * (L.) Körber (266) On volcanic rocks. E; Canary Islands; La Gomera-MSW; ese of Chipude: hiking path between Fortaleza and Igualero; se of the little brook. |
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Anaptychia ciliaris * (L.) Körber (266) On volcanic rocks. E; Canary Islands; La Gomera-MSW; ese of Chipude: hiking path between Fortaleza and Igualero; se of the little brook. |
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Bacidia coprodes (Körb.) Lettau (253) On volcanic rocks. Thallus cracked, brownish-green; apothecia lecideine (-1.2 mm diam.); disc black, flat to slightly convex, epruinose; margin disappearing with age, outer edge paraplectenchymatous; epithecium blue-green; hymenium colourless (53 µm); hypothecium brown; paraphyses parallel, simple, with +-clavate apices; asci 8-spored; ascospores colourless, without perispore, fusiform, up to 3-septate,13.0-16.8 x 3.9-4.6 µm. Spot reactions: all negative; apothecia POL-. E; Canary Islands; La Gomera-NW; s of Vallehermoso: Camino Forestal de la Meseta. |
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Bacidia coprodes (Körb.) Lettau (253) On volcanic rocks. E; Canary Islands; La Gomera-NW; s of Vallehermoso: Camino Forestal de la Meseta. |
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Bacidia coprodes (Körb.) Lettau (253) On volcanic rocks. Microscopic details. E; Canary Islands; La Gomera-NW; s of Vallehermoso: Camino Forestal de la Meseta. |
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Bacidina egenula (Nyl.) Vezda (334) On volcanic rocks. Thallus crustose, granular; apothecia biatorine (-1.1 mm diam.); disc dark brown, flat to slightly convex, epruinose; margin persistent, darker than disc, sometimes with a white pruina, outer edge paraplectenchymatous; epithecium (olive-) brown; hymenium colourless (53-77 µm); hypothecium reddish brown in upper part, colourless below; paraphyses parallel, simple; ascospores colourless acicular, one end often slightly wider, sometimes slightly curved, 31.5-40.6 x 2.1-2.8 µm. Spot reactions: all negative. E; Canary Islands; La Gomera-NW; se of Vallehermoso: El Tion. |
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Bacidina egenula (Nyl.) Vezda (334) On volcanic rocks. E; Canary Islands; La Gomera-NW; se of Vallehermoso: El Tion. |
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Bacidina egenula (Nyl.) Vezda (334) On volcanic rocks. E; Canary Islands; La Gomera-NW; se of Vallehermoso: El Tion. |
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Bacidina egenula (Nyl.) Vezda (334) On volcanic rocks. Microscopic details. E; Canary Islands; La Gomera-NW; se of Vallehermoso: El Tion. |
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Blastenia crenularia (With.) Arup, Søchting & Frödén (251) (Caloplaca crenularia). On base-rich volcanic rocks. Thallus grey, areolate; apothecia up to 1 mm diam., often undulate; disc flat (convex with age); margin prominent (disappearing with age); epithecium brown; hymenium colourless (- 80 µm); hypothecium colourl.; ascospores (8 per ascus), polarilocular, colourl., 11.9-14.4 x 6.3-7.0 µm; septum wide (6.3-7.0 µm); paraphyses unbranched. Thallus K+- violet, C-; apothecia K+ red; apothecial rim C+ red. E; Canary Islands; La Gomera-NW; s of Vallehermoso: Camino Forestal de la Meseta. |
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Blastenia crenularia (With.) Arup, Søchting & Frödén (251) (Caloplaca crenularia) E; Canary Islands; La Gomera-NW; s of Vallehermoso: Camino Forestal de la Meseta. |
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Blastenia crenularia (With.) Arup, Søchting & Frödén (251) (Caloplaca crenularia). Spot tests. E; Canary Islands; La Gomera-NW; s of Vallehermoso: Camino Forestal de la Meseta. |
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Blastenia crenularia (With.) Arup, Søchting & Frödén (265) (Caloplaca crenularia) On a nw-exposed terrace wall of volcanic rocks. E; Canary Islands; La Gomera-MW: n of Arure. |
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Blastenia crenularia (With.) Arup, Søchting & Frödén (419) Saxicolous, on volcanic rocks. Thallus brownish-grey; areolate; apothecial disk red-orange (rusty), flat to convex; margin concolorous, glossy when young; asci 8-spored; ascospores colourless, polarilocular, septum wide (14-17.5 x 7-9.5 µm. Thallus K- ; apothecia K+ purple. Photobiont chlorococcoid. E; Canary Islands; La Gomera-M; R16 between Casa Olsen and Imada: Lomo de las Cardos. |
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Blastenia crenularia (With.) Arup, Søchting & Frödén (419) Saxicolous, on volcanic rocks. Microscopic details. E; Canary Islands; La Gomera-M; R16 between Casa Olsen and Imada: Lomo de las Cardos. |
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Blastenia crenularia (With.) Arup, Søchting & Frödén (433) Saxicolous, on volcanic rocks (extremely dry and sunny). Thallus +- thick, cracked-areolate, grey; apothecia up to 1 mm diam., rounded but sometimes slightly flexuose; usualy rusty red, but under very sunny and dry situatuions also red-orange; flat, later convex; margin biatorin, concolorous wit disc, glossy when young, later insconspicous; asci 8-spored; epithecium brown, hymenium colourless (45 µm); ascospores colourless, polarilocular (12.6-14 x 6.3-8 1µm) ; septum 4-7 µm wide. Thallus K- ; apothecia K+ purple; epithecium K+ purple. E; Canary Islands; La Gomera-NW; nnw of Vallehermoso; n of the Ermita de Coromoto; surroundings of Chijere. |
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Blastenia crenularia (With.) Arup, Søchting & Frödén (433) Saxicolous, on volcanic rocks (extremely dry and sunny). E; Canary Islands; La Gomera-NW; nnw of Vallehermoso; n of the Ermita de Coromoto; surroundings of Chijere. |
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Blastenia crenularia (With.) Arup, Søchting & Frödén (433) Saxicolous, on volcanic rocks (extremely dry and sunny). Microscopic details. E; Canary Islands; La Gomera-NW; nnw of Vallehermoso; n of the Ermita de Coromoto; surroundings of Chijere |
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Buellia disciformis (Fr.) Mudd (347) On smooth bark of Castanea sativa. Thallus continuous; apothecia up to 1.2 mm diam.; disc flat to slightly convex, sometimes +- pruinose; margin lecideine; epithecium brown; hymenium colourless (112 µm), with numerous oil droplets; hypothecium brown; asci 8-spored; ascospores brown, 1-septate, 21.0-24.9 x 10.2-12.6 µm. Thallus K+ yellow-orange; UV-. Distiguished from B. erubescens by the presence of hymenial oil droplets and the orange reaction with K (B. erub. K+red). E; La Gomera-MN; s of Las Rosas; s of Roque Blanco: near Mirador Dinero. |
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Buellia disciformis (Fr.) Mudd (347) On smooth bark of Castanea sativa. E; La Gomera-MN; s of Las Rosas; s of Roque Blanco: near Mirador Dinero. |
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Buellia disciformis (Fr.) Mudd (347) On smooth bark of Castanea sativa. E; La Gomera-MN; s of Las Rosas; s of Roque Blanco: near Mirador Dinero. |
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Buellia disciformis (Fr.) Mudd (347) On smooth bark of Castanea sativa. Microscopic details. E; La Gomera-MN; s of Las Rosas; s of Roque Blanco: near Mirador Dinero. |
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Buellia disciformis (Fr.) Mudd (357) On smooth bark of Ilex canariensis. Thallus surrounded by a black prothallus; apothecia up to 1.2 mm diam.; disc flat to slightly convex, sometimes +- pruinose; margin lecideine, rim darker than inner part; epithecium brown; hymenium colourless (112 µm), with oil droplets on lower part; hypothecium brown; asci 8-spored; ascospores greenish when young, later brown, 1-septate, 24.9-29.4 x 11.2-14.0 µm. Thallus K+ yellow; UV-. Distiguished from B. erubescens by the presence of hymenial oil droplets and the orange reaction with K (B. erub. K+red). E; La Gomera-MN; s of Las Rosas; s of Roque Blanco: near Mirador Dinero. |
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Buellia disciformis (Fr.) Mudd (357) On smooth bark of Ilex canariensis. E; La Gomera-MN; s of Las Rosas; s of Roque Blanco: near Mirador Dinero. |
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Buellia disciformis (Fr.) Mudd (357) On smooth bark of Ilex canariensis. E; La Gomera-MN; s of Las Rosas; s of Roque Blanco: near Mirador Dinero. |
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Buellia disciformis (Fr.) Mudd (357) On smooth bark of Ilex canariensis. Microscopic details. E; La Gomera-MN; s of Las Rosas; s of Roque Blanco: near Mirador Dinero. |
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Buellia subdisciformis (Leight.) Vainio (252) On volcanic rocks. Thallus surrounded by a black prothallus; apothecia up to 1.2 mm diam.; disc flat to slightly convex, +- pruinose when young; margin lecideine; epithecium olive-brown; hymenium colourless (77-105 µm); hypothecium brown; asci 8-spored; paraphyses parallel; ascospores greenish when young, later brown, 1-septate, 15.4-22.8 x 7.0-14.0 µm; photobiont green. Thallus K+ yellow, C-, Pd+ yellow; apothecia POL-. E; Canary Islands; La Gomera-NW; s of Vallehermoso: Camino Forestal de la Meseta. |
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Buellia subdisciformis (Leight.) Vainio (252) On volcanic rocks. E; Canary Islands; La Gomera-NW; s of Vallehermoso: Camino Forestal de la Meseta. |
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Buellia subdisciformis (Leight.) Vainio (252) On volcanic rocks. Microscopic details. E; Canary Islands; La Gomera-NW; s of Vallehermoso: Camino Forestal de la Meseta. |
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Buellia subdisciformis (Leight.) Vainio (252) On volcanic rocks. E; Canary Islands; La Gomera-NW; s of Vallehermoso: Camino Forestal de la Meseta. |
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Buellia subdisciformis (Leight.) Vainio (454) On volcanic rocks (supralittoral zone). Thallus whitish-grey; up to 3 cm diam.; areolate (marginal +- effigurated; marginal areoles pruinose); apothecia p to 1 cm diam.; disc plane to semiglobose when old, black, pruinose when young, margin lecideine, disappearing with age; epithecium greenish brown, granular; hymenium colourless (600 µm); hypothecium brown; asci 8-spored, clavate; ascospores green-brown to dark brown, ellipsoid, 1-septate (7.4-9.5 x 4.9-6.0 µm); paraphyses simple to slightly branched; pycnidia black, numerous; photobiont green. Thallus K + yellow, later partly red; C-; Pd+ yellowish. E; Canary Islands; La Gomera-NW; wnw of Vallehermoso: Guillama (Arguamul); coastal. |
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Buellia subdisciformis (Leight.) Vainio (454) On volcanic rocks (supralittoral zone). E; Canary Islands; La Gomera-NW; wnw of Vallehermoso: Guillama (Arguamul); coastal. |
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Buellia subdisciformis (Leight.) Vainio (454) On volcanic rocks (supralittoral zone). E; Canary Islands; La Gomera-NW; wnw of Vallehermoso: Guillama (Arguamul); coastal. |
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Buellia subdisciformis (Leight.) Vainio (454) On volcanic rocks (supralittoral zone). E; Canary Islands; La Gomera-NW; wnw of Vallehermoso: Guillama (Arguamul); coastal. |
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Buellia subdisciformis (Leight.) Vainio (454) On volcanic rocks (supralittoral zone). Application with K and Pd. E; Canary Islands; La Gomera-NW; wnw of Vallehermoso: Guillama (Arguamul); coastal. |
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Buellia subdisciformis (Leight.) Vainio (454) On volcanic rocks (supralittoral zone). Microscopic details. E; Canary Islands; La Gomera-NW; wnw of Vallehermoso: Guillama (Arguamul); coastal. |
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Buellia subdisciformis (Leight.) Vainio (456) On volcanic rocks (supralittoral zone). Thallus whitish-grey; up to 3 cm diam.; areolate (marginal +- effigurated); apothecia p to 1 cm diam.; disc plane to convex, black, pruinose when young, margin prominent, persistent; epithecium brown-black, granular; hymenium colourless (80 µm); hypothecium pale brown; asci 8-spored; ascospores brown, ellipsoid, 1-septate (8.1-10.9 x 4.2-6.5 µm); paraphyses simple to slightly branched near the top; apices swollen, with a brown cap; pycnidia black, numerous; photobiont green. Thallus K + yellow, later partly red; C-; Pd+ yellowish. E; Canary Islands; La Gomera-NW; wnw of Vallehermoso: Guillama (Arguamul); coastal. |
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Buellia subdisciformis (Leight.) Vainio (456) On volcanic rocks. E; Canary Islands; La Gomera-NW; wnw of Vallehermoso: Guillama (Arguamul); coastal. |
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Buellia subdisciformis (Leight.) Vainio (456) On volcanic rocks. Thallus marginal pruinose; +- effigurated. E; Canary Islands; La Gomera-NW; wnw of Vallehermoso: Guillama (Arguamul); coastal. |
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Buellia subdisciformis (Leight.) Vainio (456) On volcanic rocks. Thallus K+ yellow, later red; Pd+ yellowish. E; Canary Islands; La Gomera-NW; wnw of Vallehermoso: Guillama (Arguamul); coastal. |
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Buellia subdisciformis (Leight.) Vainio (456) On volcanic rocks. Microscopic details. E; Canary Islands; La Gomera-NW; wnw of Vallehermoso: Guillama (Arguamul); coastal. |
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Caloplaca haematites (Chaub. ex St.-Amans) Zwackh. (35) On twigs of dead Cistus monspeliensis. Thallus consisting of dark grey, uneven areoles; apothecia up to 4 mm diam., +- constricted at base; disc sanguine (gr. haima = blood), concave to flat (when older); margin paler grey than thallus, smooth, swollen; hymenium colourless (50 µm); asci (40 µm), 8-spored; ascospores polarilocular, ellipsoidal (11.9-14.7 x 7.0-9.1 µm); septum wide (4.2-6.3 µm). Thallus K-; disc K+ red. E; Canary Islands; La Gomera-M; e of Chipude: n of Fortaleza. New to La Gomera. |
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Caloplaca haematites (Chaub. ex St.-Amans) Zwackh. (35) On twigs of dead Cistus monspeliensis. Thallus K-; disc K+ red. E; Canary Islands; La Gomera-M; e of Chipude: n of Fortaleza. |
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Caloplaca haematites (Chaub. ex St.-Amans) Zwackh. (35) On twigs of dead Cistus monspeliensis. Apothecial disc sometimes black. E; Canary Islands; La Gomera-M; e of Chipude: n of Fortaleza. |
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Caloplaca haematites (Chaub. ex St.-Amans) Zwackh. (35) On twigs of dead Cistus monspeliensis. Microscopic details. E; Canary Islands; La Gomera-M; e of Chipude: n of Fortaleza. |
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Caloplaca teicholyta (Ach.) Steiner (330) On a concrete wall. Thallus +- placodioid; lobe ends often indistinct, slightly convex; center of the thallus consisting of granules; coarsely sorediate. Thallus K-. E; Canary Islands; La Gomera-NW; se of Vallehermoso: El Tion. New to La Gomera. |
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Caloplaca tenuata * (Nyl.) Zahlbr. (23) (Often confused with C. polycarpa; syn. Flavoplaca polycarpa) On volcanic rocks. Thallus crustose-placodioid, yellow-orange, lobed at margin, lobes short, slightly convex; apothecia (-0.8 mm); disc bright orange; proper margin paler; epithecium orange-brownish; hymenium colourless (77 µm); hypothecium colourless; asci 8-spored (-53 µm); ascospores 1-septate, polarilocular, colourless, long-ellipsoid to spindle-shaped, +- curved (18-21 x 5-7 µm), septum 3-4 µm thick (ca. ¼ of the ascospore length). Photobiont chlorococcoid. Thallus and apothecia K+ red. E; Canary Islands; La Gomera-MS; e of Imada: El Azadoe. New to La Gomera. |
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Caloplaca tenuata * (Nyl.) Zahlbr. (23) On volcanic rocks. E; Canary Islands; La Gomera-MS; e of Imada: El Azadoe. |
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Caloplaca tenuata (Nyl.) Zahlbr. (23) On volcanic rocks. E; Canary Islands; La Gomera-MS; e of Imada: El Azadoe. |
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Caloplaca tenuata (Nyl.) Zahlbr. (23) On volcanic rocks. E; Canary Islands; La Gomera-MS; e of Imada: El Azadoe. |
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Caloplaca tenuata * (Nyl.) Zahlbr. (23) On volcanic rocks. Microscopic details. E; Canary Islands; La Gomera-MS; e of Imada: El Azadoe. |
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Caloplaca tenuata (Nyl.) Zahlbr. (466) (Often confused with C. polycarpa; syn. Flavoplaca polycarpa) On eroded volcanic rocks. Thallus crustose-placodioid, yellow-orange, lobed at margin, lobes short, slightly convex; apothecia (-0.8 mm); disc bright orange; proper margin paler; epithecium orange-brownish; hymenium colourless; hypothecium colourless; asci 8-spored; ascospores 1-septate, polarilocular, colourless, long-ellipsoid to spindle-shaped, often +- curved (15.8-25.2 x 4.9-6.3 µm), sometimes narrowed at the level of the septum; septum up to 2 µm thick (ca. ¼ of the ascospore length). Photobiont chlorococcoid. Thallus and apothecia K+ red. E; Canary Islands; La Gomera-MS; e of Imada: El Azadoe. New to La Gomera. |
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Caloplaca tenuata (Nyl.) Zahlbr. (466) (Often confused with C. polycarpa; syn. Flavoplaca polycarpa) On eroded volcanic rocks. E; Canary Islands; La Gomera-MS; e of Imada: El Azadoe. New to La Gomera. |
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Caloplaca tenuata (Nyl.) Zahlbr. (466) (Often confused with C. polycarpa; syn. Flavoplaca polycarpa) On eroded volcanic rocks. Microscopic details. E; Canary Islands; La Gomera-MS; e of Imada: El Azadoe. New to La Gomera. |
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Candelariella vitellina (Hoffm.) Müll. Arg. (276) On volcanic rocks. Thallus yellow-orange to mustard-yellow, areolate often clumping together (clumps resemble to cauliflower); apothecia common, disc dirty yellow, sometimes darker. K-reaction negative (sometimes reddish). The cracks of the areoles are not as deep as in C. coralliza. E; Canary Islands; La Gomera-MSW; ese of Chipude: hiking path between Fortaleza and Igualero; se of the little brook. |
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Candelariella vitellina (Hoffm.) Müll. Arg. (276) On volcanic rocks. E; Canary Islands; La Gomera-MSW; ese of Chipude: hiking path between Fortaleza and Igualero; se of the little brook. |
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Candelariella vitellina * (Hoffm.) Müll. Arg. (388) On volcanic rocks. E; Canary Islands; La Gomera-NW; n of the Bar Epina: n of the large antenna (footpath to Ermita St. Clara). |
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Chrysothrix chlorina (Ach.) Laundon (336) On volcanic rocks, shaded, north-exposed. Thallus consisting of diffuse or clustered granules. K+ orange, C-, KC-, Pd-. E; Canary Islands; La Gomera-NW; se of Vallehermoso: El Tion. |
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Chrysothrix chlorina (Ach.) Laundon (336) On volcanic rocks, shaded, north-exposed. E; Canary Islands; La Gomera-NW; se of Vallehermoso: El Tion. |
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Chrysothrix chlorina (Ach.) Laundon (336) On volcanic rocks, shaded, north-exposed. E; Canary Islands; La Gomera-NW; se of Vallehermoso: El Tion. |
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Chrysothrix chlorina (Ach.) Laundon (336) On volcanic rocks, shaded, north-exposed. E; Canary Islands; La Gomera-NW; se of Vallehermoso: El Tion. |
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Cladonia chlorophaea * (Flörke ex Sommerf.) Spreng. (344) On mossy soil. Small erect grey-green squamules with white underside; +- sorediate at margins; podetia sorediate but partly corticate (mainly at the base); with scyphi, gradually tapered to the stalk; podetia and cups with granular soredia. K+ (brownish) yellow, KC+- yellow, Pd+ red. E; La Gomera-MN; s of Las Rosas; s of Roque Blanco: near Mirador Dinero. |
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Cladonia chlorophaea (Flörke ex Sommerf.) Spreng. (344) On mossy soil. E; La Gomera-MN; s of Las Rosas; s of Roque Blanco: near Mirador Dinero. |
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Cladonia chlorophaea (Flörke ex Sommerf.) Spreng. (344) On mossy soil. E; La Gomera-MN; s of Las Rosas; s of Roque Blanco: near Mirador Dinero. |
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Cladonia chlorophaea (Flörke ex Sommerf.) Spreng. (344) On mossy soil. E; La Gomera-MN; s of Las Rosas; s of Roque Blanco: near Mirador Dinero. |
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Cladonia chlorophaea (Flörke ex Sommerf.) Spreng. (344) On mossy soil. E; La Gomera-MN; s of Las Rosas; s of Roque Blanco: near Mirador Dinero. |
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Cladonia chlorophaea (Flörke ex Sommerf.) Spreng. (344) On mossy soil. E; La Gomera-MN; s of Las Rosas; s of Roque Blanco: near Mirador Dinero. |
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Cladonia firma (Nyl.) Nyl. (291) On volcanic rocks. Squamules of the primary thallus 4.5 mm tall; tips recurved; upper surface pale olive-green; lower surface whitish, tinged +- grey-violaceous all over the lower side. Thallus K+ yellow, KC+ yellow, Pd+ red. Resembles to C. foliacea of which the lower surface is white and the thallus is K-. E; Canary Islands; La Gomera-MW; nnw of Arure: hiking path to Alojera. |
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Cladonia firma (Nyl.) Nyl. (291) On volcanic rocks. E; Canary Islands; La Gomera-MW; nnw of Arure: hiking path to Alojera. |
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Cladonia firma (Nyl.) Nyl. (291) On volcanic rocks. E; Canary Islands; La Gomera-MW; nnw of Arure: hiking path to Alojera. |
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Cladonia firma (Nyl.) Nyl. (291) On volcanic rocks. E; Canary Islands; La Gomera-MW; nnw of Arure: hiking path to Alojera. |
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Cladonia foliacea (Huds.) Willd. (36) On non calcareous soil. Thalline squamules yellowish-green on upper side, recurved and deeply incised on the tips; lower side can be seen because of the curled squamules, whitish-yellowish; podetia not seen. Thallus K-, KC+ yellowish, Pd+ orange-red. E; Canary Islands; La Gomera-M; e of Chipude: Top of the Fortaleza. |
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Cladonia foliacea (Huds.) Willd. (36) On non calcareous soil. Spot tests. E; Canary Islands; La Gomera-M; e of Chipude: Top of the Fortaleza. |
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Cladonia foliacea (Huds.) Willd. (290) On volcanic rocks. Thallus K-, C-, KC+ yellow; Pd+ red. E; Canary Islands; La Gomera-MW; nnw of Arure: hiking path to Alojera. |
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Cladonia foliacea (Huds.) Willd. (290) On volcanic rocks. E; Canary Islands; La Gomera-MW; nnw of Arure: hiking path to Alojera. |
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Cladonia foliacea (Huds.) Willd. (290) On volcanic rocks. E; Canary Islands; La Gomera-MW; nnw of Arure: hiking path to Alojera. |
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Cladonia foliacea (Huds.) Willd. (290) On volcanic rocks. E; Canary Islands; La Gomera-MW; nnw of Arure: hiking path to Alojera. |
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Cladonia furcata * (Huds.) Schrad. (341) On mossy soil. Podetia up to 3 cm x 1.2 mm, corticate, not distinctly areolate (green areoles on a whitish background --> C. rangiformis); with (few) squamules, branching dichotomously-anisotomously; apices brownish; pycnidia abundant, terminal, dark brown. Podetia K+- brownish, Pd+ orange-red. E; La Gomera-MN; s of Las Rosas; s of Roque Blanco: near Mirador Dinero. |
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Cladonia grayi Merr. ex Sandst. (396) Corticolous; on Erica arborea. E; Canary Islands; La Gomera-M: Pajarito. |
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Cladonia grayi Merr. ex Sandst. (396) Corticolous; on Erica arborea. E; Canary Islands; La Gomera-M: Pajarito. |
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Cladonia hammeri Ahti (246) On mossy soil. Primary thallus persistent, squamulose, ascending, up to 2 mm wide; lower side white, ecorticate; podetia up to 3 mm tall, scypose, esorediate, coarsely granulose to squamulose (mainly inside the cups), +- corticate at base. Thallus K- (brown), Pd + orange-red. The similar C. humilis is K+ yellow, the podetia are farinose sorediate in upper part, the base is corticate. E; Canary Islands; La Gomera-NW; s of Vallehermoso: Camino Forestal de la Meseta. |
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Cladonia hammeri Ahti (246) On mossy soil. E; Canary Islands; La Gomera-NW; s of Vallehermoso: Camino Forestal de la Meseta. |
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Cladonia hammeri Ahti (246) On mossy soil. E; Canary Islands; La Gomera-NW; s of Vallehermoso: Camino Forestal de la Meseta. |
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Cladonia hammeri Ahti (247) On mossy soil. E; La Gomera-MN; s of Las Rosas; s of Roque Blanco: hiking path from Mirador Dinero --> Rosa de las Piedras. |
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Cladonia hammeri Ahti (247) On mossy soil. E; La Gomera-MN; s of Las Rosas; s of Roque Blanco: hiking path from Mirador Dinero --> Rosa de las Piedras. |
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Cladonia hammeri Ahti (247) On mossy soil. E; La Gomera-MN; s of Las Rosas; s of Roque Blanco: hiking path from Mirador Dinero --> Rosa de las Piedras. |
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Cladonia hammeri * Ahti (321) On mossy soil. E; Canary Islands; La Gomera-NW; se of Vallehermoso: El Tion. |
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Cladonia hammeri Ahti (321) On mossy soil. E; Canary Islands; La Gomera-NW; se of Vallehermoso: El Tion. |
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Cladonia hammeri Ahti (321) On mossy soil. E; Canary Islands; La Gomera-NW; se of Vallehermoso: El Tion. |
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Cladonia hammeri Ahti (321) On mossy soil. E; Canary Islands; La Gomera-NW; se of Vallehermoso: El Tion. |
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Cladonia hammeri Ahti (321) On mossy soil. E; Canary Islands; La Gomera-NW; se of Vallehermoso: El Tion. |
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Cladonia hammeri Ahti (390) On mossy soil. E; Canary Islands; La Gomera-NW; n of the Bar Epina: hiking path between the large antenna and Ermita Santa Clara. |
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Cladonia hammeri Ahti (390) On mossy soil. E; Canary Islands; La Gomera-NW; n of the Bar Epina: hiking path between the large antenna and Ermita Santa Clara. |
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Cladonia humilis (With.) Laundon (30) (Probably C. hammeri Ahti). On soil. Podetia very small (up to 5 mm tall, scyphi up to 2.5 mm wide), ecorticate (but with a small basal corticate zone); margin of the scyphi not proliferating, but with dentate pycnidia/apothecia; inside with granular soredia; basal squamules relatively large (up to 1.9 mm wide), upper surface greenish, corticate, lower side white, ecorticate. Thallus K+ yellow, Pd+ orange-red. E; Canary Islands; La Gomera-NW; s of Vallehermoso: Camino Forestal de la Meseta. |
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Cladonia humilis (With.) Laundon (30) On soil. Application with K and Pd. E; Canary Islands; La Gomera-NW; s of Vallehermoso: Camino Forestal de la Meseta. |
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Cladonia pyxidata (L.) Hoffm. (554) Corticolous; on Erica arborea. Podetia (1.5 cm), corticate in lower, bare in upper parts; gradually widening from base to the scyphus (0.6 cm diam.); podetia and cup covered with large granules (or phyllidate), soredia absent; basal squamules ascending, incised; upper side pale brownish-greenish, lower surface white. Thallus K-, KC-, Pd+ red. E; Canary Islands; La Gomera-M: Pajarito. |
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Cladonia pyxidata (L.) Hoffm. (554) Corticolous; on Erica arborea. E; Canary Islands; La Gomera-M: Pajarito. |
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Cladonia pyxidata (L.) Hoffm. (554) Corticolous; on Erica arborea. Application with Pd. E; Canary Islands; La Gomera-M: Pajarito. |
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Cladonia ramulosa * (With.) Laundon. (345) On rotting wood. Podetia very variable, up to 3 cm tall, often terminating in irregular scyphi, center not perforate, with marginal, digitate proliferations; surface with small warts and granules, often patchily corticate; sometimes also with small squamules, soredia absent or sparse; primary thallus consisting of incised squamules, upper surface greenish, grey-green, whitish below; apothecia usually numerous, but missing here (probably because of the very dark growing place, --> Laurisilva). Thallus K-, KC-, Pd+ red. E; La Gomera-MN; s of Las Rosas; s of Roque Blanco: near Mirador Dinero. |
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Cladonia ramulosa (With.) Laundon. (345) On rotting wood. E; La Gomera-MN; s of Las Rosas; s of Roque Blanco: near Mirador Dinero. |
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Cladonia ramulosa (With.) Laundon. (345) On rotting wood. E; La Gomera-MN; s of Las Rosas; s of Roque Blanco: near Mirador Dinero. |
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Cladonia ramulosa (With.) Laundon. (345) On rotting wood. E; La Gomera-MN; s of Las Rosas; s of Roque Blanco: near Mirador Dinero. |
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Cladonia ramulosa (With.) Laundon. (345) On rotting wood. E; La Gomera-MN; s of Las Rosas; s of Roque Blanco: near Mirador Dinero. |
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Cladonia ramulosa (With.) Laundon. (397) Corticolous; on Erica arborea. With apothecium and cup. E; Canary Islands; La Gomera-M: Pajarito. |
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Cladonia ramulosa (With.) Laundon. (397) Corticolous; on Erica arborea. E; Canary Islands; La Gomera-M: Pajarito. |
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Cladonia rangiformis * Hoffm. (28/29) On mossy soil. Podetia corticate, branches widely divergent, loosely attached and dying from the base, +- isotomic and dichotomous, up to 3-4 cm tall; with (few) squamules; axils open or closed; algal layer areolate (older branches mottled); pycnidia brown, at tips of branches, frequent. Podetia K+ pale yellow, C-, KC-, Pd-. E; Canary Islands; La Gomera-NW; s of Vallehermoso: Camino Forestal de la Meseta. |
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Cladonia rangiformis Hoffm. (28/29) On mossy soil. E; Canary Islands; La Gomera-NW; s of Vallehermoso: Camino Forestal de la Meseta. |
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Cladonia rangiformis Hoffm. (28/29) On mossy soil. E; Canary Islands; La Gomera-NW; s of Vallehermoso: Camino Forestal de la Meseta. |
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Cladonia rangiformis Hoffm. (28/29) On mossy soil. E; Canary Islands; La Gomera-NW; s of Vallehermoso: Camino Forestal de la Meseta. |
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Cladonia rangiformis Hoffm. (245) On mossy soil. Thallus K+ yellow, Pd-. E; Canary Islands; La Gomera-NW; s of Vallehermoso: Camino Forestal de la Meseta. |
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Cladonia rangiformis Hoffm. (342) On mossy soil. Very atypical due to infection with Syzygospora bachmannii (identified by V. Wirth). Moreover the growing place was very dark (--> Laurisilva). The answer: many and unusually large squamules. Thallus K+ yellow, Pd-. E; La Gomera-MN; s of Las Rosas; s of Roque Blanco: near Mirador Dinero. |
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Cladonia rangiformis Hoffm. (342) On mossy soil. E; La Gomera-MN; s of Las Rosas; s of Roque Blanco: near Mirador Dinero. |
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Cladonia rangiformis Hoffm. (342) On mossy soil. E; La Gomera-MN; s of Las Rosas; s of Roque Blanco: near Mirador Dinero. |
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Cladonia rangiformis Hoffm. (342) On mossy soil. E; La Gomera-MN; s of Las Rosas; s of Roque Blanco: near Mirador Dinero. |
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Cladonia rangiformis Hoffm. (342) On mossy soil. E; La Gomera-MN; s of Las Rosas; s of Roque Blanco: near Mirador Dinero. |
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Cladonia rangiformis Hoffm. (342) On mossy soil. Application with K E; La Gomera-MN; s of Las Rosas; s of Roque Blanco: near Mirador Dinero. |
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Cladonia rangiformis Hoffm. (342) On mossy soil. Syzygospora bachmannii (identified by V. Wirth). E; La Gomera-MN; s of Las Rosas; s of Roque Blanco: near Mirador Dinero. |
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Cladonia rangiformis Hoffm. (391) On soil. E; Canary Islands; La Gomera-NW; n of the Bar Epina: hiking path between the large antenna and Ermita Santa Clara. |
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Cladonia rangiformis Hoffm. (391) On soil. E; Canary Islands; La Gomera-NW; n of the Bar Epina: hiking path between the large antenna and Ermita Santa Clara. |
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Coccocarpia erythroxyli * (Spreng.) Swinsc. & Krog (324) On volcanic rocks. Thallus up to 10 cm diam., +- orbicular; with isidia-like rounded to flat lobules in the center; lobes adnate, imbricate, incised; apothecia laminal, up to 5 mm diam., disc reddish brown to black, flat when young, later convex; margin biatorine, later disappearing. Spot tests negative. (Pectenia plumbea is similar but with a pale margin). E; Canary Islands; La Gomera-NW; se of Vallehermoso: El Tion. |
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Coccocarpia erythroxyli * (Spreng.) Swinsc. & Krog (324) On volcanic rocks. E; Canary Islands; La Gomera-NW; se of Vallehermoso: El Tion. |
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Coccocarpia erythroxyli (Spreng.) Swinsc. & Krog (324) On volcanic rocks. E; Canary Islands; La Gomera-NW; se of Vallehermoso: El Tion. |
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Coccocarpia erythroxyli (Spreng.) Swinsc. & Krog (324) On volcanic rocks. E; Canary Islands; La Gomera-NW; se of Vallehermoso: El Tion. |
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Coccocarpia erythroxyli * (Spreng.) Swinsc. & Krog (384) On volcanic rocks. E; Canary Islands; La Gomera-NW; n of the Bar Epina: n of the large antenna (hiking path to Ermita St. Clara). |
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Coccocarpia erythroxyli (Spreng.) Swinsc. & Krog (384) On volcanic rocks. E; Canary Islands; La Gomera-NW; n of the Bar Epina: n of the large antenna (hiking path to Ermita St. Clara). |
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Coccocarpia erythroxyli (Spreng.) Swinsc. & Krog (384) On volcanic rocks. E; Canary Islands; La Gomera-NW; n of the Bar Epina: n of the large antenna (hiking path to Ermita St. Clara). |
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Collema nigrescens * (Huds.) DC. (271) (Together with C. tenax - left side of the first image). On eroded volcanic rocks. Lobes up to 1 cm wide, pustulate and ridged; apothecia common, +- stalked (0.6-1 mm); disc flat to convex; margin thin, lecanorine; hymenium colourless (-70 µm); ascospores acicular, often bent, up to 12-septate (38.5-45.5 x 3.5-4.2 µm). The similar C. subnigrescens has shorter and wider ascospores; they are only 4-5-septate. E; Canary Islands; La Gomera-MSW; ese of Chipude: hiking path between Fortaleza and Igualero; se of the little brook. |
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Collema nigrescens (Huds.) DC. (271) On eroded volcanic rocks. E; Canary Islands; La Gomera-MSW; ese of Chipude: hiking path between Fortaleza and Igualero; se of the little brook. |
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Collema nigrescens (Huds.) DC. (271) On eroded volcanic rocks. E; Canary Islands; La Gomera-MSW; ese of Chipude: hiking path between Fortaleza and Igualero; se of the little brook. |
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Collema nigrescens (Huds.) DC. (271) On eroded volcanic rocks. E; Canary Islands; La Gomera-MSW; ese of Chipude: hiking path between Fortaleza and Igualero; se of the little brook. |
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Collema nigrescens (Huds.) DC. (271) On eroded volcanic rocks. Copy is wet. E; Canary Islands; La Gomera-MSW; ese of Chipude: hiking path between Fortaleza and Igualero; se of the little brook. |
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Collema nigrescens (Huds.) DC. (271) On eroded volcanic rocks. E; Canary Islands; La Gomera-MSW; ese of Chipude: hiking path between Fortaleza and Igualero; se of the little brook. |
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Collema polycarpon * Hoffm. (381) On volcanic rocks. Thallus cushion like; consisting of of numerous thick lobes, usually acending at centre; apothecia numerous, terminal. E; Canary Islands; La Gomera-NW; n of the Bar Epina: n of the large antenna (hiking path to Ermita St. Clara). |
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Collema polycarpon Hoffm. (381) On volcanic rocks. E; Canary Islands; La Gomera-NW; n of the Bar Epina: n of the large antenna (hiking path to Ermita St. Clara). |
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Collema tenax * (Sw.) Ach. em. Degel. (272) On eroded volcanic rocks. Thallus blackish; lobes irregular, erect, strongly swollen when wet (especially on the ascending margins); apothecia sessile (0.5 mm diam.); disc brown, concave; thalline margin thick, smooth; asci 4-spored; ascospores colourless, narrowly ellipsoid, 3-septate to submuriform (16.8-27.3 x 7.7-10.5 µm). E; Canary Islands; La Gomera-MSW; ese of Chipude: hiking path between Fortaleza and Igualero; se of the little brook. |
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Collema tenax (Sw.) Ach. em. Degel. (272) On eroded volcanic rocks. E; Canary Islands; La Gomera-MSW; ese of Chipude: hiking path between Fortaleza and Igualero; se of the little brook. |
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Collema tenax (Sw.) Ach. em. Degel. (272) On eroded volcanic rocks. Copy is wet. E; Canary Islands; La Gomera-MSW; ese of Chipude: hiking path between Fortaleza and Igualero; se of the little brook. |
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Collema tenax (Sw.) Ach. em. Degel. (272) On eroded volcanic rocks. E; Canary Islands; La Gomera-MSW; ese of Chipude: hiking path between Fortaleza and Igualero; se of the little brook. |
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Collema tenax (Sw.) Ach. em. Degel. (272) On eroded volcanic rocks. Apothecia. E; Canary Islands; La Gomera-MSW; ese of Chipude: hiking path between Fortaleza and Igualero; se of the little brook. |
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Collema tenax (Sw.) Ach. em. Degel. (272) On eroded volcanic rocks. Copy is wet. E; Canary Islands; La Gomera-MSW; ese of Chipude: hiking path between Fortaleza and Igualero; se of the little brook. |
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Collema tenax (Sw.) Ach. em. Degel. (272) On eroded volcanic rocks. Microscopic details. E; Canary Islands; La Gomera-MSW; ese of Chipude: hiking path between Fortaleza and Igualero; se of the little brook. |
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Dermatocarpon miniatum (L.) Mann (190317) On volcanic rocks. Thallus resembles to Umbilicaria (attached by a solitary holdfast), mostly single-lobed, up to 7 cm wide, concave but margins raised; margins usually deeply incised and contorted; perithecia small (-0.3 mm) with dark brown ostioles (Umbilicaria without perithecia); lower surface tan-brown. No spot reactions. E; Canary Islands; La Gomera-MSW; ese of Chipude: hiking path between Fortaleza and Igualero; se of the little brook. |
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Dermatocarpon miniatum (L.) Mann (517) On volcanic rocks. E; Canary Islands; La Gomera-MSW; ese of Chipude: hiking path between Fortaleza and Igualero. |
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Dermatocarpon miniatum (L.) Mann (517) On volcanic rocks. E; Canary Islands; La Gomera-MSW; ese of Chipude: hiking path between Fortaleza and Igualero. |
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Diploicia canescens (Dicks.) Massal. (435) Saxicolous; on volcanic rocks. Thallus forming rosettes, 3-8 cm diam.; lobes convex, pruinose (especially at margin); cracked-areolate towards centre; soralia delimited at first, later coalescing, farinose to granular, whitish to grey-glaucous; apothecia rare , 0.3-0.5 mm diam., disc black; proper margin black; asci 8-spored; ascospores brown, 1-septate (10.5-12.3 x 5.6-6.7 µm). Photobiont green. K+ yellow-orange, Pd + yellow. E; Canary Islands; La Gomera-NW; nnw of Vallehermoso; n of the Ermita de Coromoto; surroundings of Chijere. |
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Diploicia canescens (Dicks.) Massal. (435) Saxicolous; on volcanic rocks. E; Canary Islands; La Gomera-NW; nnw of Vallehermoso; n of the Ermita de Coromoto; surroundings of Chijere. |
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Diploicia canescens (Dicks.) Massal. (435) Saxicolous; on volcanic rocks. E; Canary Islands; La Gomera-NW; nnw of Vallehermoso; n of the Ermita de Coromoto; surroundings of Chijere. |
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Diploicia canescens (Dicks.) Massal. (435) Saxicolous; on volcanic rocks. Application with K. E; Canary Islands; La Gomera-NW; nnw of Vallehermoso; n of the Ermita de Coromoto; surroundings of Chijere. |
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Diploicia canescens (Dicks.) Massal. (435) Saxicolous; on volcanic rocks. Microscopic details. E; Canary Islands; La Gomera-NW; nnw of Vallehermoso; n of the Ermita de Coromoto; surroundings of Chijere. |
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Diploschistes diacapsis (L.) Lumbsch (39) On soil (HCl-). Thallus verrucose, areolate; areoles flat to warty, pruinose; apothecia urceolate; disc concave, pruinose; hymenium and hpothecium colourless; ascospores brown, muriform (4-5 transversal and 1-2 longitudinal septa); 28.7-35.7x11.9-16.8 µm. Thallus K-, C+ red; KC+- reddish, Pd-. E; Canary Islands; La Gomera-M; e of Chipude: Top of the Fortaleza. New to La Gomera. |
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Diploschistes diacapsis (L.) Lumbsch (39) On soil (HCl-). E; Canary Islands; La Gomera-M; e of Chipude: Top of the Fortaleza. |
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Diploschistes diacapsis (L.) Lumbsch (39) On soil (HCl-). Pruina on areoles. E; Canary Islands; La Gomera-M; e of Chipude: Top of the Fortaleza. |
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Diploschistes diacapsis (L.) Lumbsch (39) On soil (HCl-). Microscopic details. E; Canary Islands; La Gomera-M; e of Chipude: Top of the Fortaleza. |
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Diploschistes scruposus * (Schreb.) Norman (50) On volcanic rocks (terrace wall). Thallus grey, areolate, warted-verrucose; apothecia frequent, urceolate, disc black, whitish pruinose, up to 2 mm, margin lecanorine, raised above the thallus; photobiont trebouxioid. Cortex K± yellow, C+ red. E; Canary Islands; La Gomera-MW; hiking path between Las Hayas and El Cercado. |
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Diploschistes scruposus * (Schreb.) Norman (50) On volcanic rocks (terrace wall). E; Canary Islands; La Gomera-MW; hiking path between Las Hayas and El Cercado. |
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Diploschistes scruposus * (Schreb.) Norman (50) On volcanic rocks (terrace wall). E; Canary Islands; La Gomera-MW; hiking path between Las Hayas and El Cercado. |
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Diploschistes scruposus (Schreb.) Norman (50) On volcanic rocks (terrace wall). E; Canary Islands; La Gomera-MW; hiking path between Las Hayas and El Cercado. |
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Diploschistes scruposus (Schreb.) Norman (351) On volcanic rocks. Epithecium black; hymenum colourless (112 µm); hypothecium colourless (dark brown downward); asci >4-spored; ascospores colourless, dark brown with age, muriform (5-7 transversal and 1-2 longitudinal septa, (17.5) 30.8-33.3 x 10.5-12.3 µm. hallus K+ yellow-red, C+red E; La Gomera-MN; s of Las Rosas; s of Roque Blanco: in the vicinity of the Mirador Dinero. |
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Diploschistes scruposus (Schreb.) Norman (351) On volcanic rocks. E; La Gomera-MN; s of Las Rosas; s of Roque Blanco: in the vicinity of the Mirador Dinero. |
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Diploschistes scruposus (Schreb.) Norman (351) On volcanic rocks. Microscopic details. E; La Gomera-MN; s of Las Rosas; s of Roque Blanco: in the vicinity of the Mirador Dinero. |
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Flavoparmelia caperata * (L.) Hale (295) On volcanic rocks. Thallus up to 15 cm in diameter; lobes up to 1 cm wide, wrinkled (mainly at the center), whith coarse soralia; apothecia rare; lower surface black (center), brown at the margins; rhizines simple. Cortex K+ yellow, medulla K-, C- (difference to P. flaventior), Pd+ orange. Very similar is P. soredians but this species has more adpressed lobes and farinose soralia; medulla K+ red). E; Canary Islands; La Gomera-MW; nnw of Arure: hiking path to Alojera. |
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Flavoparmelia caperata * (L.) Hale (295) On volcanic rocks. E; Canary Islands; La Gomera-MW; nnw of Arure: hiking path to Alojera. |
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Flavoparmelia caperata (L.) Hale (295) On volcanic rocks. E; Canary Islands; La Gomera-MW; nnw of Arure: hiking path to Alojera. |
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Flavoparmelia caperata (L.) Hale (295) On volcanic rocks. E; Canary Islands; La Gomera-MW; nnw of Arure: hiking path to Alojera. |
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Flavoparmelia caperata (L.) Hale (295) On volcanic rocks. E; Canary Islands; La Gomera-MW; nnw of Arure: hiking path to Alojera. |
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Flavoplaca oasis * (A. Massal.) Arup, Frödén & Søchting (330) (Caloplaca oasis). On a concrete wall. Thallus indisctinct, consisting of small irregular, yellowish spots; apothecia small (up to 0.5 mm diam.); margin lighter than disc; epithecium orange-brown; hymenium colourless (55 µm); hypothecium colourless; asci 8-spored (46 µm); ascospores polarilocular, broad ellipsoid (9.8-12.6 x 5.3-7.0 µm); septum3.5-4.2 µm). All yellow parts K+ red. E; Canary Islands; La Gomera-NW; se of Vallehermoso: El Tion. New to La Gomera. |
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Flavoplaca oasis (A. Massal.) Arup, Frödén & Søchting (330) (Caloplaca oasis). On a concrete wall. E; Canary Islands; La Gomera-NW; se of Vallehermoso: El Tion. |
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Flavoplaca oasis (A. Massal.) Arup, Frödén & Søchting (330) (Caloplaca oasis). On a concrete wall. E; Canary Islands; La Gomera-NW; se of Vallehermoso: El Tion. |
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Flavoplaca oasis (A. Massal.) Arup, Frödén & Søchting (330) (Caloplaca oasis). On a concrete wall. Microscopic details. E; Canary Islands; La Gomera-NW; se of Vallehermoso: El Tion. |
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Flavoplaca ora (Poelt & Nimis) Arup, Frödén & Søchting (543) Saxicol; on siliceous basaltic rocks. Thallus orange, areolate; apothecia up to 0.5 mm diam., rounded or irregular; disc flat; proper margin +- paler orange, persistent; epithecium orange-brown; hymenium colourless (45 µm); hypothecium colourless; asci 8-spored; ascospores polarilocular (1-septate), 10.5-12.6 x 6.0-8.1 μm; septum 4.2-6.0 μm; photobiont chlorococcoid. E; Canary Islands; La Gomera-MW; sw of Arure: hiking path to Taguluche. New to La Gomera. |
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Flavoplaca ora (Poelt & Nimis) Arup, Frödén & Søchting (543) Saxicol; on basaltic rocks. Microscopic details. E; Canary Islands; La Gomera-MW; sw of Arure: hiking path to Taguluche. New to La Gomera. |
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Fuscopannaria atlantica Jörg. & James (448) Terricolous; on undisturbed soil. Thallus grey; spredding irregularly; consisting of inconspicuous lobes (squamules), covered with isidioid granules; photobiont Nostoc. Thallus Pd-. E; Canary Islands; La Gomera-NW; nw of Vallehermoso; w Teselinde Massiv: ssw of Ermita St. Clara. |
Flechtenbilder (G-L)
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Gyalolechia canariensis (Follmann & Poelt) Søchting, Frödén & Arup (20) (Fulgensia canariensis; Caloplaca canariensis). On strongly eroded volcanic rocks. Thallus crustose, consisting of yellow areoles/squamules, surface smooth; apothecia up to 1 mm diam.; disc flat to slightly convex with age; margin lecanorine; epith. orange-brown; hymenium colourless (88 µm); hypoth. colourless; asci 8-spored (53 µm); ascospores simple to 1-septate, pyriform (14.4-18.2 x 6.3-7.4 µm), conidia bacilliform; photobiont chlorococcoid. Thalllus and apothecia K+ red. E; Canary Islands; La Gomera-S ; nne of Santiago: hiking path between El Rumbazo and Targa. |
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Gyalolechia canariensis (Follmann & Poelt) Søchting, Frödén & Arup (20) On strongly eroded volcanic rocks. E; Canary Islands; La Gomera-S ; nne of Santiago: hiking path between El Rumbazo and Targa. |
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Gyalolechia canariensis (Follmann & Poelt) Søchting, Frödén & Arup (20) On strongly eroded volcanic rocks. Microscopic details. E; Canary Islands; La Gomera-S ; nne of Santiago: hiking path between El Rumbazo and Targa. |
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Gyalolechia canariensis (Follmann & Poelt) Søchting, Frödén & Arup (38) On strongly eroded volcanic rocks. E; Canary Islands; La Gomera-MSW; se of Chipude: at Fortaleza. |
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Gyalolechia canariensis (Follmann & Poelt) Søchting, Frödén & Arup (38) E; Canary Islands; La Gomera-MSW; se of Chipude: at Fortaleza. |
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Gyalolechia canariensis (Follmann & Poelt) Søchting, Frödén & Arup (38) On strongly eroded volcanic rocks. E; Canary Islands; La Gomera-MSW; se of Chipude: at Fortaleza. |
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Gyalolechia canariensis (Follmann & Poelt) Søchting, Frödén & Arup (278) On volcanic rocks. E; Canary Islands; La Gomera-MSW; ese of Chipude: hiking path between Fortaleza and Igualero; se of the little brook. |
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Gyalolechia canariensis (Follmann & Poelt) Søchting, Frödén & Arup (278) On volcanic rocks. E; Canary Islands; La Gomera-MSW; ese of Chipude: hiking path between Fortaleza and Igualero; se of the little brook. |
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Gyalolechia canariensis (Follmann & Poelt) Søchting, Frödén & Arup (468) (syn. Fulgensia canariensis; Caloplaca canariensis). On strongly eroded volcanic rocks. Thallus crustose, consisting of yellow areoles/squamules, surface smooth; apothecia up to 1 mm diam.; disc flat to slightly convex with age; margin lecanorine; epith. orange-brown; hymenium colourless; hypothecium colourless; asci 8-spored; ascospores1-septate, pyriform (12.3-14.7 x 6.3-7.0 µm); septum 2.8-3.5 µm; photobiont chlorococcoid. Thalllus and apothecia K+ red. E; Canary Islands; La Gomera-MS; e of Imada: El Azadoe. |
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Gyalolechia canariensis (Follmann & Poelt) Søchting, Frödén & Arup (468) (syn. Fulgensia canariensis; Caloplaca canariensis). E; Canary Islands; La Gomera-MS; e of Imada: El Azadoe. |
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Gyalolechia canariensis (Follmann & Poelt) Søchting, Frödén & Arup (468) (syn. Fulgensia canariensis; Caloplaca canariensis). Microscopic details. E; Canary Islands; La Gomera-MS; e of Imada: El Azadoe. |
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Gyalolechia canariensis (Follmann & Poelt) Søchting, Frödén & Arup (510) On strongly eroded volcanic rocks. Ascospores 14-18 x 7-7.7 µm. Apothecia and Thallus K+ red. E; Canary Islands; La Gomera-MSW; ese of Chipude: hiking path between Fortaleza and Igualero; se of the little brook. |
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Gyalolechia canariensis (Follmann & Poelt) Søchting, Frödén & Arup (510) On strongly eroded volcanic rocks. E; Canary Islands; La Gomera-MSW; ese of Chipude: hiking path between Fortaleza and Igualero; se of the little brook. |
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Gyalolechia canariensis (Follmann & Poelt) Søchting, Frödén & Arup (510) On strongly eroded volcanic rocks. Microscopic details. E; Canary Islands; La Gomera-MSW; ese of Chipude: hiking path between Fortaleza and Igualero; se of the little brook. |
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Gyalolechia flavovirescens (Wulfen) Søchting, Frödén & Arup (250) (Caloplaca flavovirescens). On base-rich volcanic rocks. Thallus pale (greenish) yellow, dispersed; apothecia up to 1.5 mm diam.; apothecial disc orange (giving the lichen a bicoloured appearance), convex when older; margin paler, soon disappearing; epithecium orange-brown; hymenium colourless (-65 µm); ascospores ellipsoid, colourless, polarilocular (12.3-14.0 x 7.0-7.7 µm); septum thick (5.3-6.0 µm). Thallus & apothecia K+ red. E; Canary Islands; La Gomera-NW; s of Vallehermoso: Camino Forestal de la Meseta. |
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Gyalolechia flavovirescens (Wulfen) Søchting, Frödén & Arup (304) (Caloplaca flavovirescens). On volcanic rocks. Thallus consisting of (greenish)-yellow areoles, whitish pruinose; apothecia (-0.7 mm diam.); disc deep orange, flat, later convex; thalline margin yellow-grey; proper margin orange; epith./hypoth. colourless; hymenium colourless (-60 µm); asci 8-spored (-50 µm); ascospores colourless, polarilocular (12.6 - 14.0 x 6.3 - 7.7 µm); septum (3.5-5.3 µm). All parts K+ red. E; Canary Islands; La Gomera-MW; nnw of Arure: hiking path to Alojera. |
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Gyalolechia flavovirescens (Wulfen) Søchting, Frödén & Arup (304) On volcanic rocks. E; Canary Islands; La Gomera-MW; nnw of Arure: hiking path to Alojera. |
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Gyalolechia flavovirescens (Wulfen) Søchting, Frödén & Arup (304) On volcanic rocks. E; Canary Islands; La Gomera-MW; nnw of Arure: hiking path to Alojera. |
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Gyalolechia flavovirescens (Wulfen) Søchting, Frödén & Arup (304) On volcanic rocks. Microscopic details. E; Canary Islands; La Gomera-MW; nnw of Arure: hiking path to Alojera. |
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Gyalolechia flavovirescens (Wulfen) Søchting, Frödén & Arup (329) On volcanic rocks. Thallus consisting of (greenish)-yellow areoles, whitish pruinose; apothecia (-1.2 mm diam.); disc deep orange, flat; thalline margin concolourous with thallus; proper margin orange; epith./hypoth. colourless; hymenium colourless (-53 µm); asci 8-spored; ascospores colourless, polarilocular (16.1 - 18.2 x 7.7 - 9.1 µm); septum (7.0-8.8 µm). All parts K+ red. E; Canary Islands; La Gomera-NW; se of Vallehermoso: El Tion. |
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Gyalolechia flavovirescens (Wulfen) Søchting, Frödén & Arup (329) On volcanic rocks. E; Canary Islands; La Gomera-NW; se of Vallehermoso: El Tion. |
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Gyalolechia flavovirescens (Wulfen) Søchting, Frödén & Arup (329) On volcanic rocks. Application with K. E; Canary Islands; La Gomera-NW; se of Vallehermoso: El Tion. |
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Gyalolechia flavovirescens (Wulfen) Søchting, Frödén & Arup (329) On volcanic rocks. Microscopic details. E; Canary Islands; La Gomera-NW; se of Vallehermoso: El Tion. |
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Gyalolechia subbracteata (Nyl.) Søchting, Frödén & Arup (18) On calcareous soil. Thallus clearly lobate at the margins (but lobes shorter and more adnate than at G. fulgens); pruinose; usually without apothecia; the similar G. bracteata is not lobate and has usually many apothecia); with many scaly schizidia. Thallus K+ red. E; Canary Islands; La Gomera-NW: Village of Epina. New to La Gomera. |
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Gyalolechia subbracteata (Nyl.) Søchting, Frödén & Arup (33) On calcareous soil. Thallus clearly lobate at the margins (but lobes shorter and more adnate than at G. fulgens); pruinose; usually without apothecia; apothecial disc flat; margin lecanorine; with many scaly schizidia; (the similar G. bracteata is not lobate and has usually many apothecia). Thallus and apothecia K+ red. E; Canary Islands; La Gomera-NNW: hiking path between Playa de Vallehermoso and M. Alcala (Buenavista). |
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Gyalolechia subbracteata (Nyl.) Søchting, Frödén & Arup (33) On calcareous soil. E; Canary Islands; La Gomera-NNW: hiking path between Playa de Vallehermoso and M. Alcala (Buenavista). |
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Heterodermia leucomela * (L.) Poelt (293) On volcanic rocks, covered with soil. Thallus 5-10 cm, appearing as loosely attached mats; lobes elongate, up to 3 mm wide, ± dichotomously branched, with conspicuous black marginal cilia (resembles to Anaptychia ciliaris); upper surface green; lower side white, ± channelled, powdery to sorediate (no cortex existing); apothecia not seen. E; Canary Islands; La Gomera-MW; nnw of Arure: hiking path to Alojera. |
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Heterodermia obscurata (Nyl.) Trevis. (243) On a rottened tree stump. Thallus +- attached to the substrate; lobes ca. 1-3 mm wide; soralia globose, on ascending terminal lobes, soredia granular. Lower surface whitish, ecorticate, with rust-coloured or yellowish-orange pigments; with black, squarrose marginal rhizinae, up to 2 mm. E; La Gomera-MN; s of Las Rosas; s of Roque Blanco: near Mirador Dinero. |
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Heterodermia obscurata (Nyl.) Trevis. (243) On a rottened tree stump. E; La Gomera-MN; s of Las Rosas; s of Roque Blanco: near Mirador Dinero. |
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Heterodermia obscurata (Nyl.) Trevis. (243) On a rottened tree stump. E; La Gomera-MN; s of Las Rosas; s of Roque Blanco: near Mirador Dinero. |
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Heterodermia obscurata (Nyl.) Trevis. (401) Corticol, on Erica arborea. E; Canary Islands; La Gomera-M: Pajarito. |
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Heterodermia obscurata (Nyl.) Trevis. (401) Corticol, on Erica arborea. E; Canary Islands; La Gomera-M: Pajarito. |
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Ikaeria aurantiellina * (Harm.) Kondr., Upreti & Hur (358) (syn. Caloplaca aegatica). On Ilex canariensis. Thallus grey, inconspicuous or endosubstratic; apothecia zeorine (margin lecanorine and biatorine) up to 1 mm diam.; proper margin +- paler than disc; thalline margin orange; epithecium orange-brown, granular, hymenium colourless (88 µm); hypothecium colourless; asci 8- spored; ascospores polarilocular (14.7 - 16.5 x 7.7 - 10.5 µm); septum broad (7.0-9.8 µm). Thallus K-; apothecia K+ red. E; La Gomera-MN; s of Las Rosas; s of Roque Blanco: near Mirador Dinero. |
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Ikaeria aurantiellina (Harm.) Kondr., Upreti & Hur (358) (syn. Caloplaca aegatica). On Ilex canariensis. E; La Gomera-MN; s of Las Rosas; s of Roque Blanco: near Mirador Dinero. |
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Ikaeria aurantiellina (Harm.) Kondr., Upreti & Hur (358) (syn. Caloplaca aegatica). On Ilex canariensis. E; La Gomera-MN; s of Las Rosas; s of Roque Blanco: near Mirador Dinero. |
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Ikaeria aurantiellina (Harm.) Kondr., Upreti & Hur (358) (syn. Caloplaca aegatica). On Ilex canariensis. E; La Gomera-MN; s of Las Rosas; s of Roque Blanco: near Mirador Dinero. |
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Ikaeria aurantiellina (Harm.) Kondr., Upreti & Hur (358) (syn. Caloplaca aegatica). On Ilex canariensis. Microscopic details. E; La Gomera-MN; s of Las Rosas; s of Roque Blanco: near Mirador Dinero. |
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Lecanora spec. (309) On volcanic rocks. Thallus consisting of epruinose fertile warts; warts crowded, irregularly semiglobose (up to 1 mm); apothecial disc black, epruinose, rim lecanorine; epithecium olive (not becoming violet after K); hymenium colourless (40 µm); hypothecium colourless; paraphyses parallel; asci 4-8-spored; ascospores colourless, simple (10.5-12.3 x 5.3-5.6 µm). Thallus K-, C-, KC-, Pd-. E; Canary Islands; La Gomera-MW; nnw of Arure: hiking path to Alojera. |
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Lecanora spec. (309) On volcanic rocks. E; Canary Islands; La Gomera-MW; nnw of Arure: hiking path to Alojera. |
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Lecanora spec. (309) On volcanic rocks. E; Canary Islands; La Gomera-MW; nnw of Arure: hiking path to Alojera. |
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Lecanora spec. (309) On volcanic rocks. Microscopic details. E; Canary Islands; La Gomera-MW; nnw of Arure: hiking path to Alojera. |
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Lecanora spec. (309) On volcanic rocks. Microscopic details (after application with K). E; Canary Islands; La Gomera-MW; nnw of Arure: hiking path to Alojera. |
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Lecanora spec. (311) On volcanic rocks. Thallus consisting of warted areoles; photobiont green; apothecia up to 1.8 mm diam.; disc brown, flat to convex; proper margin persistent; thalline marin disappearing when older; epithecium olive-brown, with granules; hymenium colourless (-55 µm); hypothecium colourless; asci 8-spored; paraphyses parallel; ascospores colourless, simple (10.5-13.3 x 5.3-7.4 µm); medulla POL+ (big crystals). Thallus K+ yellow, C-, Pd-. E; Canary Islands; La Gomera-MW; nnw of Arure: hiking path to Alojera. |
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Lecanora spec. (311) On volcanic rocks. E; Canary Islands; La Gomera-MW; nnw of Arure: hiking path to Alojera. |
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Lecanora spec. (311) On volcanic rocks. E; Canary Islands; La Gomera-MW; nnw of Arure: hiking path to Alojera. |
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Lecanora spec. (311) On volcanic rocks. Microscopic details. E; Canary Islands; La Gomera-MW; nnw of Arure: hiking path to Alojera. |
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Lecanora albescens (Hoffm.) Brant & Rostr. (333) On volcanic rocks. Thallus inconspicuous, consisting of small pruinose patches; apothecia crowded, up to 0.6 mm diam; disc plane, grey, slightly pruinose; thallin margin persistent, wavy, strongly pruinose; epithecium grey-brown, covered with small granules (POL+); hymenium colourless (- 55 µm); hypothecium colourless; asci 8-spored; ascospores simple, ellipsoidal, colourless, 9.1-14.7 x 4.9-7.7 µm; apothecial margin and medulla with massive crystals (POL+); all crystals not dissolving in K; photobiont trebouxioid. Spot tests negative. E; Canary Islands; La Gomera-NW; se of Vallehermoso: El Tion. |
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Lecanora albescens (Hoffm.) Brant & Rostr. (333) On volcanic rocks. E; Canary Islands; La Gomera-NW; se of Vallehermoso: El Tion. |
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Lecanora albescens (Hoffm.) Brant & Rostr. (333) On volcanic rocks. Microscopic details. E; Canary Islands; La Gomera-NW; se of Vallehermoso: El Tion. |
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Lecanora campestris (Schaer.) Hue (423) Saxicolous; on volcanic rocks. Thallus verrucose, areolate; apothecia sessile, 0.5-1.5 mm diam., disc flat to slightly convex, smooth, dark brown to blackish; margin prominent, flexuose, crenulate; ascii 8-spored; ascospores colourless, simple, 12.3-14.7 x 6.3-7.0 µm; photobiont green. C-, K+ yellow, C-, KC-, Pd- ; POL-. E; Canary Islands; La Gomera-M; R16 between Casa Olsen and Imada: Lomo de las Cardos. |
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Lecanora campestris (Schaer.) Hue (423) Saxicolous; on volcanic rocks. E; Canary Islands; La Gomera-M; R16 between Casa Olsen and Imada: Lomo de las Cardos. |
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Lecanora campestris (Schaer.) Hue (423) Saxicolous; on volcanic rocks. Microscopic details. E; Canary Islands; La Gomera-M; R16 between Casa Olsen and Imada: Lomo de las Cardos. |
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Lecanora cenisia Ach. (310) On volcanic rocks. Thallus consisting of warted areoles; photobiont green; apothecia up to 1 mm diam.; disc black, flat to convex; margin lecanorine; epithecium olive, with granules; hymenium colourless (-55 µm); hypothecium colourless; asci 8-spored; paraphyses parallel; ascospores colourless, simple (10.5-12.6 x 5.3-7.7 µm); margin and medulla POL+. Thallus K+ yellow --> red (with crystals), C-, Pd+ yellow --> orange. E; Canary Islands; La Gomera-MW; nnw of Arure: hiking path to Alojera. |
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Lecanora cenisia Ach. (310) On volcanic rocks. E; Canary Islands; La Gomera-MW; nnw of Arure: hiking path to Alojera. |
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Lecanora cenisia Ach. (310) On volcanic rocks. Microscopic details. E; Canary Islands; La Gomera-MW; nnw of Arure: hiking path to Alojera. |
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Lecanora muralis * (Schreb.) Rabenh. (25) On volcanic rocks. Thallus placodioid, pruinose; maginal lobes +- appressed; center sometimes areolate; apothecia up to 1.5 mm diam.; disc yellowish brown, without pruina; margin lecanorine, pruinose; ascospores colourless, simple, ellipsoid (10.5-14.0x6.7-7.4 µm). E; Canary Islands; La Gomera-MS; e of Imada: El Azadoe. |
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Lecanora muralis * (Schreb.) Rabenh. (25) On volcanic rocks. E; Canary Islands; La Gomera-MS; e of Imada: El Azadoe. |
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Lecanora muralis (Schreb.) Rabenh. (25) On volcanic rocks. E; Canary Islands; La Gomera-MS; e of Imada: El Azadoe. |
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Lecanora muralis (Schreb.) Rabenh. (25) On volcanic rocks. E; Canary Islands; La Gomera-MS; e of Imada: El Azadoe. |
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Lecanora muralis (Schreb.) Rabenh. (25) On volcanic rocks. Microscopic details. E; Canary Islands; La Gomera-MS; e of Imada: El Azadoe. |
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Lecanora praepostera Nyl. (307) On volcanic rocks. Thallus not pruinose; areolate; areoles uneven; apothecia up to 1.3 mm diam., constricted at base with age; thalline exciple persistent; true exiple black, often inconspicuous; disk black; +- flat; epithecium olivaceous, granular (POL+, but disappearing after application with K); margin and medulla with massive crystals (POL+, also after K); hymenium colourless (-55 µm); hypothecium colourless; asci 8-spored; ascospores colourless, simple (10.5-14.4 x 5.3-7.7 µm); photobiont trebouxioid. Thallus K+ red (formation of crystal needles); C-, Pd+ orange. E; Canary Islands; La Gomera-MW; nnw of Arure: hiking path to Alojera. |
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Lecanora praepostera Nyl. (307) On volcanic rocks. E; Canary Islands; La Gomera-MW; nnw of Arure: hiking path to Alojera. |
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Lecanora praepostera Nyl. (307) On volcanic rocks. E; Canary Islands; La Gomera-MW; nnw of Arure: hiking path to Alojera. |
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Lecanora praepostera Nyl. (307) On volcanic rocks. Application with K and Pd. E; Canary Islands; La Gomera-MW; nnw of Arure: hiking path to Alojera. |
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Lecanora praepostera Nyl. (307) On volcanic rocks. Microscopic details. E; Canary Islands; La Gomera-MW; nnw of Arure: hiking path to Alojera. |
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Lecanora cf. puniceofusca Bagl. (332) On volcanic rocks. Thallus continuous, slightly warted; apothecia, up to 1.1 mm diam., often crowded, +- constricted at base; margin persistent, +- flexuose; disc red-brown; epithecium red-brown, without granules; hymenium 50 μm; asci 8-spored; ascospores colourless, ellipsoid, simple 10.5-12.6 × 4.9-6.3 μm, thick-walled, smooth. Thallus K+ indistinctly yellow, Pd–; POL-. E; Canary Islands; La Gomera-NW; se of Vallehermoso: El Tion. |
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Lecanora cf. puniceofusca Bagl. (332) On volcanic rocks. E; Canary Islands; La Gomera-NW; se of Vallehermoso: El Tion. |
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Lecanora cf. puniceofusca Bagl. (332) On volcanic rocks. Microscopic details E; Canary Islands; La Gomera-NW; se of Vallehermoso: El Tion. |
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Lecanora rupicola (L.) Zahlbr. subsp. rupicola (45) On volcanic rocks. Thallus thick, deeply cracked-areolate; areoles flat, containing one or two apothecia; apothecia subimmersed, up to 1,5 mm diam.; disc flat to slightly convex, black, pruinose; margin concolorous with thallus (lecanorine); epithecium olive-green; hymenium colourless (50 µm); hypothecium colourless; ascospores simple, colourless, elliptical (10.5-13.3 x 6.3-7.7 µm); photobiont trebouxioid. Thallus K+ yellow, C-, KC-, Pd+ yellow (atranorin, chloratranorin); apothecial disc (pruina) C+ yellow. E; Canary Islands; La Gomera-M; e of Chipude: Fortaleza (via ferrata). New to La Gomera. |
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Lecanora rupicola (L.) Zahlbr. subsp. rupicola (45) On volcanic rocks. Thallus K+ yellow, Pd+ yellow. E; Canary Islands; La Gomera-M; e of Chipude: Fortaleza (via ferrata). |
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Lecanora rupicola (L.) Zahlbr. subsp. rupicola (45) On volcanic rocks. Apothecial disc C+ yellow. E; Canary Islands; La Gomera-M; e of Chipude: Fortaleza (via ferrata). |
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Lecanora rupicola (L.) Zahlbr. subsp. rupicola (45) On volcanic rocks. Microscopic details. E; Canary Islands; La Gomera-M; e of Chipude: Fortaleza (via ferrata). |
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Lecanora sulphurella * Hepp (180411) On volcanic rocks. Thallus consisting of areoles, grey to bright yellow; apothecial disc black; margin persistent, of the colour of the thallus (lecanorine). E; Canary Islands; La Gomera-SW; ssw of Chipude: Ermita N.S. de Guadalupe. |
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Lecanora sulphurella * Hepp (180411) On volcanic rocks. E; Canary Islands; La Gomera-SW; ssw of Chipude: Ermita N.S. de Guadalupe. |
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Lecanora sulphurella * Hepp (220317) On volcanic rocks. E; Canary Islands; La Gomera-NW; nnw of Vallehermoso; n of the Ermita de Coromoto; surroundings of Chijere. |
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Lecanora sulphurella * Hepp (220317) On volcanic rocks. E; Canary Islands; La Gomera-NW; nnw of Vallehermoso; n of the Ermita de Coromoto; surroundings of Chijere. |
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Lecidea fuscoatra (L.) Ach. (422) Saxicolous; on volcanic rocks. Thallus areolate, areoles flat to convex, brown (but sometimes with a white pruina; apothecia up to 1,5 mm diam., +- immersed between areoles; disc flat to slightly convex; margin thin, concolourous, soon excluded; ascospores simple, colourless, (13.3-14.7 x 5.6-7.0 µm). Thallus K-, C-(!), KC-, Pd-. E; Canary Islands; La Gomera-M; R16 between Casa Olsen and Imada: Lomo de las Cardos. |
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Lecidea fuscoatra (L.) Ach. (422) Saxicolous; on volcanic rocks. E; Canary Islands; La Gomera-M; R16 between Casa Olsen and Imada: Lomo de las Cardos. |
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Lecidea fuscoatra (L.) Ach. (422) Saxicolous; on volcanic rocks. Microscopic details. E; Canary Islands; La Gomera-M; R16 between Casa Olsen and Imada: Lomo de las Cardos. |
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Lecidella carpathica Körb. (254) On volcanic rocks (nutrient enriched). Thallus grey-brown, granular (not sorediate), cracked- areolate; prothallus black; apothecia black, up to 1.1 mm diam.; margin disappearing with age; disc flat to convex; epithecium blue-green; hymenium colourless (70 µm); hypothecium brown; paraphyses anastomosing; ascospores simple, colourless (11.6-14.0 x 7,0-8.1 µm). Thallus K-, C- KC+ yellow, Pd-; medulla J-. E; Canary Islands; La Gomera-NW; s of Vallehermoso: Camino Forestal de la Meseta. |
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Lecidella carpathica Körb. (254) On volcanic rocks (nutrient enriched). E; Canary Islands; La Gomera-NW; s of Vallehermoso: Camino Forestal de la Meseta. |
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Lecidella carpathica Körb. (254) On volcanic rocks (nutrient enriched). E; Canary Islands; La Gomera-NW; s of Vallehermoso: Camino Forestal de la Meseta. |
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Lecidella carpathica Körb. (254) On volcanic rocks (nutrient enriched). Microscopic details. E; Canary Islands; La Gomera-NW; s of Vallehermoso: Camino Forestal de la Meseta. |
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Lecidella stigmatea (Ach.) Hertel & Leukert (421) Saxicolous; on volcanic rocks. Thallus crustose, episubstratic, areolate, pale grey to brownish, esorediate; apothecial disc plane, black, later convex; proper margin lecideine, concolourous, disappearing with age; epithecium olivaceous; hymenium colourless, 85 µm; hypothecium pale brownish; asci 8-spored; ascospores simple, colourless (14.0-18.6 x 7.0-7.7 µm); photobiont green. Thallus K-, C+ yellowish, Pd-. E; Canary Islands; La Gomera-M; R16 between Casa Olsen and Imada: Lomo de las Cardos. |
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Lecidella stigmatea (Ach.) Hertel & Leukert (421) Saxicolous; on volcanic rocks. E; Canary Islands; La Gomera-M; R16 between Casa Olsen and Imada: Lomo de las Cardos. |
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Lecidella stigmatea (Ach.) Hertel & Leukert (421) Saxicolous; on volcanic rocks. E; Canary Islands; La Gomera-M; R16 between Casa Olsen and Imada: Lomo de las Cardos. |
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Lecidella stigmatea (Ach.) Hertel & Leukert (421) Saxicolous; on volcanic rocks. Microscopic details. E; Canary Islands; La Gomera-M; R16 between Casa Olsen and Imada: Lomo de las Cardos. |
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Leprocaulon quisquilare (Leers) M. Choisy (324) syn. Leprocaulon microscopicum (Vill.) Gams ex D. Hawksw. On thin soil over volcanic rocks. Thallus crustose (resembling Lepraria), with adscending, Stereocaulon-like, very small pseudopodetia; pseudopodetia whitish, up to 5 mm tall, simple near the base, slightly branched towards the apices, covered with leprose green granules. E; Canary Islands; La Gomera-NW; se of Vallehermoso: El Tion. |
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Leprocaulon quisquilare (Leers) M. Choisy (324) syn. Leprocaulon microscopicum (Vill.) Gams ex D. Hawksw. On thin soil over volcanic rocks. E; Canary Islands; La Gomera-NW; se of Vallehermoso: El Tion. |
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Leptochidium albociliatum (Desmaz.) Choisy (274) On volcanic rocks. Thallus consisting of ascending lobes (up to 3 mm wide); lobe margins with fine, white hairs; lower surface with white rhizinae; photobiont: Nostoc. E; Canary Islands; La Gomera-MSW; ese of Chipude: hiking path between Fortaleza and Igualero; se of the little brook. |
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Leptochidium albociliatum (Desmaz.) Choisy (274) On volcanic rocks. E; Canary Islands; La Gomera-MSW; ese of Chipude: hiking path between Fortaleza and Igualero; se of the little brook. |
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Leptogium cyanescens (Rabenh.) Körber (261) Corticolous; on Laurus novocanariensis. Thallus forming large, loose patches (up to 10 cm diam.); lobes smooth, 5-10 mm wide; with numerous laminal or marginal, cylindrical, coralloid to flat isidia; no apothecia. Spot tests negative. (The similar L. cochleatum lacks flattened isidia and has usually apothecia). E; Canary Islands; La Gomera-NW; n of the Bar Epina: surroundings of the large antenna. |
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Leptogium cyanescens (Rabenh.) Körber (261) Corticolous; on Laurus novocanariensis. E; Canary Islands; La Gomera-NW; n of the Bar Epina: surroundings of the large antenna. |
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Leptogium cyanescens (Rabenh.) Körber (354) Corticolous; on Ilex canariensis. Lobes wit amrginal and laminal isidia; isisdia cylindrical or flat. E; La Gomera-MN; s of Las Rosas; s of Roque Blanco: near Mirador Dinero. |
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Leptogium cyanescens (Rabenh.) Körber (354) Corticolous; on Ilex canariensis. E; La Gomera-MN; s of Las Rosas; s of Roque Blanco: near Mirador Dinero. |
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Leptogium schraderi (Ach.) Nyl. (303) (Between specimens of Toninia toepfferi). Thallus forming small upright tufts (up to few mm diam.); lobes wrinkled, margins ascending, with granular isidia. On mossy rock fissures filled with soil. E; Canary Islands; La Gomera-MW; nnw of Arure: hiking path to Alojera. |
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Leptogium schraderi (Ach.) Nyl. (303) (Between specimens of Toninia toepfferi). On mossy rock fissures filled with soil. E; Canary Islands; La Gomera-MW; nnw of Arure: hiking path to Alojera. |
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Leptogium schraderi (Ach.) Nyl. (338) (Between specimens of Toninia toepfferi). On mossy soil. Wet specimen. E; Canary Islands; La Gomera-MS; n Playa Santiago; close to Las Toscas: junction to Benchijigua. |
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Leptogium schraderi (Ach.) Nyl. (338) (Between specimens of Toninia toepfferi). On mossy soil. E; Canary Islands; La Gomera-MS; n Playa Santiago; close to Las Toscas: junction to Benchijigua. |
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Lobaria macaronesica Cornejo & Scheidegger (16) Corticolous; on Laurus novocanariensis. Lobes with depressions and reticulately ridged; without soralia; with true, cylindric isidia (arising directely from the upper surface: completely corticate). Medulla K+ yellow to red, C-, Pd+ yellow. (The similar L. pulmonaria has soralia, sometimes developing into untrue isidia. L. immixta is not sorediate, isidia are marginal and flat; medulla C+ red). E; Canary Islands; La Gomera-NW; n of the Bar Epina: surroundings of the large antenna. |
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Lobaria macaronesica Cornejo & Scheidegger (16) Corticolous; on Laurus novocanariensis. E; Canary Islands; La Gomera-NW; n of the Bar Epina: surroundings of the large antenna. |
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Lobaria macaronesica Cornejo & Scheidegger (257) Corticolous; on Ilex canariensis. Medulla K+ yellowish, C-, KC-, Pd+ orange. E; Canary Islands; La Gomera-NW; n of the Bar Epina: surroundings of the large antenna. |
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Lobaria macaronesica Cornejo & Scheidegger (257) Corticolous; on Ilex canariensis. E; Canary Islands; La Gomera-NW; n of the Bar Epina: surroundings of the large antenna. |
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Lobaria macaronesica Cornejo & Scheidegger (257) Corticolous; on Ilex canariensis. E; Canary Islands; La Gomera-NW; n of the Bar Epina: surroundings of the large antenna. |
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Lobarina scrobiculata (Scop.) Nyl. ex Cromb. (405) Corticolous; on Erica arborea. Lobes rounded; slightly ridged; margin entire; marginal soredia blue-grey, sometimes also laminal; lower surface tomentose, convex patches naked-whitish. Medulla K+ yellow, Pd+ orange. E; Canary Islands; La Gomera-M: Pajarito. |
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Lobarina scrobiculata (Scop.) Nyl. ex Cromb. (405) Corticolous; on Erica arborea. E; Canary Islands; La Gomera-M: Pajarito. |
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Lobarina scrobiculata (Scop.) Nyl. ex Cromb. (405) Corticolous; on Erica arborea. Lower side. E; Canary Islands; La Gomera-M: Pajarito. |
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Lobaria virens * (With.) Laundon (353) Corticolous; on Ilex canariensis. Upper surface of lobes not reticulate-ridged; lobes occasionally with secondary squamules; apothecia 2-4 mm diam., laminal, constricted at base; thalline exciple inflexed. Medulla K-, C-, KC+- reddish, Pd-. E; La Gomera-MN; s of Las Rosas; s of Roque Blanco: in the vicinity of the Mirador Dinero. |
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Lobaria virens (With.) Laundon (353) Corticolous; on Ilex canariensis. E; La Gomera-MN; s of Las Rosas; s of Roque Blanco: in the vicinity of the Mirador Dinero. |
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Lobaria virens (With.) Laundon (353) Corticolous; on Ilex canariensis. E; La Gomera-MN; s of Las Rosas; s of Roque Blanco: in the vicinity of the Mirador Dinero. |
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Lobaria virens (With.) Laundon (360) Corticolous; on Laurus novocanariensis. Spot tests negative. E; La Gomera-MN; s of Las Rosas; s of Roque Blanco: in the vicinity of the Mirador Dinero. |
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Lobaria virens (With.) Laundon (360) Corticolous; on Laurus novocanariensis. E; La Gomera-MN; s of Las Rosas; s of Roque Blanco: in the vicinity of the Mirador Dinero. |
Flechtenbilder (M-P)
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Nephroma laevigatum * Ach. (349) Terricolous on mosses in humid habitats (Laurisilva). Thallus loosely adpressed, up to 15 cm diam.; lobes broad, up to 1 cm wide, robust; upper surface ± smooth, without reticulations; margins entire; sometimes with (few) folioles; lower surface matt, smooth, rarely subpubescent; medulla yellow, rarely entirely white; photobiont Nostoc; apothecia common, rounded to reniform, up to 1 cm, disc red-brown, margins entire, with a ± raised thalline cuff, dorsal surface conspicuously scabrid-areolate and ridged. Medulla K+ purple (yellow parts). The commonest Nephroma in Macaronesia. E; La Gomera-MN; s of Las Rosas; s of Roque Blanco: in the vicinity of the Mirador Dinero. |
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Nephroma laevigatum Ach. (349) Terricolous on mosses in humid habitats (Laurisilva). E; La Gomera-MN; s of Las Rosas; s of Roque Blanco: in the vicinity of the Mirador Dinero. |
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Nephroma laevigatum Ach. (349) Terricolous on mosses in humid habitats (Laurisilva). E; La Gomera-MN; s of Las Rosas; s of Roque Blanco: in the vicinity of the Mirador Dinero. |
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Nephroma laevigatum * Ach. (349) Terricolous on mosses in humid habitats (Laurisilva). E; La Gomera-MN; s of Las Rosas; s of Roque Blanco: in the vicinity of the Mirador Dinero. |
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Nephroma laevigatum Ach. (366) On Castanea sativa. E; La Gomera-MN; s of Las Rosas; s of Roque Blanco: in the vicinity of the Mirador Dinero. |
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Nephroma laevigatum Ach. (366) On Castanea sativa. Lobes with (few) folioles only; most lobes without folioles. E; La Gomera-MN; s of Las Rosas; s of Roque Blanco: in the vicinity of the Mirador Dinero. |
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Nephroma parile (Ach.) Ach. (408) On Laurus novocanariensis. Lobes 3-8 mm wide, brown-greyish, smooth; margins ascending; with marginal pustular soralia towards the margins, later spreading to the surface; medulla whitish; lower surface without rhizines, wrinkled, naked to faintly tomentose; apothecia not seen (very seldom fertile). Photobiont blue-green. E; Canary Islands; La Gomera-M: Pajarito. |
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Nephroma parile (Ach.) Ach. (408) On Laurus novocanariensis. E; Canary Islands; La Gomera-M: Pajarito. |
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Nephroma parile (Ach.) Ach. (408) On Laurus novocanariensis. Lower surface. E; Canary Islands; La Gomera-M: Pajarito. |
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Nephroma tangeriense * (Maheu &. A. Gillet) Zahlbr. (31) Terricolous on mosses in humid habitats (Laurisilva). Thallus closely adpressed; lobes up to 0.6 cm wide, fragile, thin, papyraceous; developing scattered ± adpressed or ascending crenulate laminal folioles; margins entire, often ± ascending and crisped, frequently developing horizontal or ascending folioles; medulla yellow (at least in parts); apothecia rare, smaller than at N. laevigatum. Medulla K+ red (yellow parts only). Distinction from other Nephromas: Lobes frequently with horizontal or ascending marginal and laminal folioles. E; Canary Islands; La Gomera-NW; s of Vallehermoso: Camino Forestal de la Meseta. |
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Nephroma tangeriense (Maheu &. A. Gillet) Zahlbr. (31) Terricolous on mosses in humid habitats (Laurisilva). E; Canary Islands; La Gomera-NW; s of Vallehermoso: Camino Forestal de la Meseta. |
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Nephroma tangeriense (Maheu &. A. Gillet) Zahlbr. (31) Terricolous on mosses in humid habitats (Laurisilva). E; Canary Islands; La Gomera-NW; s of Vallehermoso: Camino Forestal de la Meseta. |
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Nephroma tangeriense * (Maheu &. A. Gillet) Zahlbr. (380) Saxicol, terricol. E; Canary Islands; La Gomera-NW; n of the Bar Epina: n of the large antenna (hiking path to Ermita St. Clara). |
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Ochrolechia incarnata * (Leight.) Kukwa, Schmitt & Ertz (385) On volcanic rocks. Thallus grey, smooth or granular warted, not sorediate; apothecia numerous (up to 4 mm diam.), evenly scattered; margin lecanorine, thick (sometimes covering the disc), smooth, entire; disc pale brown, concave, flat with age, covered with a thick whitish pruina; epithecium dark brown, hymenium colourless (230 µm); asci 4-8-spored; ascospores colourless, simple, ellipsoid (56-70 x 35-42 µm). Disc pruina C-, cortex and apothecial rim C+ yellow. The very similar O. parella is chemical different, O. pallescens is corticolous, . E; Canary Islands; La Gomera-NW; n Bar Epina: hiking path to St. Clara. New to La Gomera. |
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Ochrolechia incarnata * (Leight.) Kukwa, Schmitt & Ertz (385) On volcanic rocks. E; Canary Islands; La Gomera-NW; n Bar Epina: hiking path to St. Clara. New to La Gomera. |
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Ochrolechia incarnata (Leight.) Kukwa, Schmitt & Ertz (385) On volcanic rocks. E; Canary Islands; La Gomera-NW; n Bar Epina: hiking path to St. Clara. New to La Gomera. Ident. I. Schmitt |
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Ochrolechia incarnata (Leight.) Kukwa, Schmitt & Ertz (436) On volcanic rocks. E; Canary Islands; La Gomera-NW; n Bar Epina: hiking path to St. Clara. New to La Gomera. Ident. I. Schmitt |
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Ochrolechia pallescens * (L.) A. Massal. (262) Corticolous; on Laurus novocanariensis. Thallus grey, smooth or granular warted, not sorediate; apothecia numerous (up to 3 mm diam.), evenly scattered, margin lecanorine, thick (sometimes covering the disc), smooth, entire, disc yellowish-brown, concave, flat with age, covered with a thick pruina (reddish at first, later whitish). The very similar O. parella is saxicolous. E; Canary Islands; La Gomera-NW; n of the Bar Epina: hiking path between the large antenna and Ermita Santa Clara. |
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Ochrolechia pallescens * (L.) A. Massal. (262) Corticolous; on Laurus novocanariensis. E; Canary Islands; La Gomera-NW; n of the Bar Epina: hiking path between the large antenna and Ermita Santa Clara. |
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Ochrolechia pallescens * (L.) A. Massal. (180406) Corticolous; on Laurus novocanariensis. Thallus grey, smooth or granular warted, not sorediate; apothecia numerous (up to 3 mm diam.), evenly scattered, margin lecanorine, thick (sometimes covering the disc), smooth, entire, disc yellowish-brown, concave, flat with age, covered with a thick pruina (reddish at first, later whitish); epithecium dark brown, hymenium colourless; asci 4-spored; ascospores colourless, simple, ellipsoid (65-74 x 27-35 µm). Thallus K+ yellow, KC+ yellow, Pd-; apothecial disc KC+- red. The very similar O. parella is saxicolous. E; Canary Islands; La Gomera-NW; n of the Bar Epina: hiking path between the large antenna and Ermita Santa Clara. |
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Ochrolechia pallescens (L.) A. Massal. (369) On smooth bark of Castanea sativa. Thallus K+- yellowish; disk pruina C-, KC+ yellow, E; La Gomera-MN; s of Las Rosas; s of Roque Blanco: near Mirador Dinero. |
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Ochrolechia pallescens (L.) A. Massal. (369) On smooth bark of Castanea sativa. E; La Gomera-MN; s of Las Rosas; s of Roque Blanco: near Mirador Dinero. |
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Ochrolechia pallescens (L.) A. Massal. (369) On smooth bark of Castanea sativa. E; La Gomera-MN; s of Las Rosas; s of Roque Blanco: near Mirador Dinero. |
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Ochrolechia pallescens (L.) A. Massal. (369) On smooth bark of Castanea sativa. E; La Gomera-MN; s of Las Rosas; s of Roque Blanco: near Mirador Dinero. |
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Ochrolechia parella (L.) A. Massal. (308) On volcanic rocks. Thallus grey, smooth or granular warted, not sorediate; apothecia numerous (up to 4 mm diam.), evenly scattered, margin lecanorine, thick (sometimes covering the disc), smooth, entire, disc pale brown, concave, flat with age, covered with a thick whitish pruina; epithecium dark brown, hymenium colourless (230 µm); asci 4-8-spored; ascospores colourless, simple, ellipsoid (56-70 x 35-42 µm). Disc pruina C+ red. The very similar O. pallescens is corticolous. E; Canary Islands; La Gomera-MW; nnw of Arure: hiking path to Alojera. |
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Ochrolechia parella (L.) A. Massal. (308) On volcanic rocks. E; Canary Islands; La Gomera-MW; nnw of Arure: hiking path to Alojera. |
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Ochrolechia parella (L.) A. Massal. (308) On volcanic rocks. Microscopic details. E; Canary Islands; La Gomera-MW; nnw of Arure: hiking path to Alojera. |
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Ochrolechia parella (L.) A. Massal. (340) On volcanic rocks. Thallus grey, smooth or granular warted, not sorediate; apothecia up to 4 mm diam.; margin lecanorine, thick (sometimes covering the disc), smooth, entire; disc pale brown, concave, flat with age, covered with a thick whitish pruina; epithecium brown, hymenium colourless (255 µm); asci 5-8-spored; ascospores colourless, simple, ellipsoid, thin-walled (53-61 x 32-40 µm). The very similar O. pallescens is corticolous. Disc pruina C+ red. E; Canary Islands; La Gomera-NW; se of Vallehermoso: El Tion. |
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Ochrolechia parella (L.) A. Massal. (340) On volcanic rocks. E; Canary Islands; La Gomera-NW; se of Vallehermoso: El Tion. |
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Ochrolechia parella (L.) A. Massal. (340) On volcanic rocks. E; Canary Islands; La Gomera-NW; se of Vallehermoso: El Tion. |
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Ochrolechia parella (L.) A. Massal. (340) On volcanic rocks. Microscopic details. E; Canary Islands; La Gomera-NW; se of Vallehermoso: El Tion. |
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Ochrolechia parella (L.) A. Massal. (416) Saxicolous; on volcanic rocks. Ident. I. Schmitt |
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Ochrolechia parella (L.) A. Massal. (416) Saxicolous; on volcanic rocks. Ident. I. Schmitt |
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Ochrolechia turneri (Sm.) Hasselroth (407) Corticol; on Erica arborea. Thallus thin; covered with whitish soralia, up to 2 mm diam.. C + pale yellow, K- (but with red droplets), Pd-. E; Canary Islands; La Gomera-M: Pajarito. |
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Ochrolechia turneri (Sm.) Hasselroth (407) Corticol; on Erica arborea. E; Canary Islands; La Gomera-M: Pajarito. |
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Ochrolechia turneri (Sm.) Hasselroth (407) Corticol; on Erica arborea. Application wit K and C. E; Canary Islands; La Gomera-M: Pajarito. |
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Pannaria rubiginosa * (Thunb. ex Ach.) Delise (356/363/368) On Ilex canariensis, Laurus novocanariensis, Castanea sativa. Thallus rosette-forming; squamules grey (bluish grey when wet), deeply incised; margins ascending and paler; usually fertile; apothecial disc reddish-brownish; margin lecanorine, crenulate. Thallus K-, C-, Pd+ orange. E; La Gomera-MN; s of Las Rosas; s of Roque Blanco: near Mirador Dinero. |
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Pannaria rubiginosa * (Thunb. ex Ach.) Delise (356/363/368) On Ilex canariensis, Laurus novocanariensis, Castanea sativa. E; La Gomera-MN; s of Las Rosas; s of Roque Blanco: near Mirador Dinero. |
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Parmelia saxatilis (L.) Ach. (42) On volcanic rocks. Lobes ridged; pseudocyphella forming a reticulate net (mainly near the tips); isidia cylindrical to coralloid, sometimes covering the whole center. Cortex K+ yellow; medulla K+ yellow becoming orange to red, Pd+ yellow and then orange-red The very similar P. ernstiae is lobulate, strongly pruinose and corticolous. Distincted from P. sulcata and P. omphalodes by the presence of isidia. E; Canary Islands; La Gomera-M; e of Chipude: Fortaleza (via ferrata). |
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Parmelia saxatilis (L.) Ach. (42) On volcanic rocks. E; Canary Islands; La Gomera-M; e of Chipude: Fortaleza (via ferrata). |
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Parmelia saxatilis (L.) Ach. (42) On volcanic rocks. E; Canary Islands; La Gomera-M; e of Chipude: Fortaleza (via ferrata). |
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Parmelia saxatilis (L.) Ach. (400) Corticol; on Erica arborea. E; Canary Islands; La Gomera-M: Pajarito. |
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Parmeliella triptophylla (Ach.) Müll. Arg. (361) On shady Laurus novocanariensis. Thallus consisting of scattered, minute, lobes/squamules (up to 1 mm wide); attached by a black, conspicuous hypothallus, visible from above; upper cortex pseudoparenchymatous; apothecia < 0.2 mm, sessile, +- constricted at base; disc brown; true exciple pale brownish, thick (well developed); thalline exciple not present; hymenium J+ permanently blue; paraphyses unbranched, not thickened at the tips; asci/ascospores not found (apothecia juvenile); no isidia (thallus juvenil), but with flattened marginal lobules; photobiont blue-green, cells arranged in packets (Nostoc). Spot tests negative; Hymenium J+ blue (permanent). E; La Gomera-MN; s of Las Rosas; s of Roque Blanco: near Mirador Dinero. |
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Parmeliella triptophylla (Ach.) Müll. Arg. (361) On shady Laurus novocanariensis. E; La Gomera-MN; s of Las Rosas; s of Roque Blanco: near Mirador Dinero. |
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Parmeliella triptophylla (Ach.) Müll. Arg. (361) On shady Laurus novocanariensis. E; La Gomera-MN; s of Las Rosas; s of Roque Blanco: near Mirador Dinero. |
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Parmeliella triptophylla (Ach.) Müll. Arg. (361) On shady Laurus novocanariensis. Microscopic details. E; La Gomera-MN; s of Las Rosas; s of Roque Blanco: near Mirador Dinero. |
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Parmotrema perlatum (Huds.) Choisy (263) On a nw-exposed terrace wall of volcanic rocks. Thallus up to 10 cm in diameter, loosely attached to the substratum only; lobes with ascending, undulate and incised margins, up to 0.8 cm wide; delimited soralia at the margins and tips; lower surface black, brown near the margins; here without rhizines (but sometimes with marginal cilia). Cortex K+ yellow; medulla K+ yellow --> orange, C-, KC-, Pd+ yellowish. E; Canary Islands; La Gomera-MW: n of Arure. |
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Parmotrema perlatum (Huds.) Choisy (263) On a nw-exposed terrace wall of volcanic rocks. E; Canary Islands; La Gomera-MW: n of Arure. |
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Parmotrema perlatum (Huds.) Choisy (447) Terricol; between mosses. Thallus up to 10 cm in diameter, loosely attached to the substratum; lobes with ascending, undulate and incised margins, up to 0.8 cm wide; delimited soralia at the margins and tips; lower surface black, brown near the margins; here without rhizines (but with black, marginal cilia). Cortex K+ yellow; medulla K+ yellow --> orange, Pd+ yellowish. E; La Gomera NW; nnw Vallehermoso; ssw Santa Clara: w Teselinde mountains. |
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Parmotrema perlatum (Huds.) Choisy (447) Terricol; between mosses. E; La Gomera NW; nnw Vallehermoso; ssw Santa Clara: w Teselinde mountains. |
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Parmotrema reticulatum * (Taylor) Choisy (49) On volcanic rocks (terrace wall). Upper surface with a faint network of white pseudocyphellae. Soralia mainly at margins or tips of the lobes; lobe margins with black cilia; lower surface without rhizines (naked) along margins. Cortex K+ yellow, medulla Pd+ orange-red. E; Canary Islands; La Gomera-MW; hiking path between Las Hayas and El Cercado. Image width: 54 mm. |
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Parmotrema reticulatum * (Taylor) Choisy (31) E; Canary Islands; La Gomera-NW; s of Vallehermoso: Camino Forestal de la Meseta. |
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Parmotrema reticulatum (Taylor) Choisy (32) On volcanic rocks. E; Canary Islands; La Gomera-NW; s of Vallehermoso: Camino Forestal de la Meseta. |
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Parmotrema reticulatum (Taylor) Choisy (294) On volcanic rocks. E; Canary Islands; La Gomera-MW; nnw of Arure: hiking path to Alojera. |
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Parmotrema reticulatum (Taylor) Choisy (294) On volcanic rocks. E; Canary Islands; La Gomera-MW; nnw of Arure: hiking path to Alojera. |
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Parmotrema reticulatum * (Taylor) Choisy (377) On volcanic rocks. E; Canary Islands; La Gomera-NW; n of the Bar Epina: n of the large antenna (hiking path to Ermita St. Clara). |
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Parmotrema reticulatum (Taylor) Choisy (377) On volcanic rocks. With apothecia. Medulla/soralia K+ yellow --> deep red, Pd+ orange. E; Canary Islands; La Gomera-NW; n of the Bar Epina: n of the large antenna (hiking path to Ermita St. Clara). |
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Parmotrema robustum * (Degel.) Hale (260) On Erica arborea. Thallus resembles to P. perlatum; but lobes larger (up to 10 mm wide), often inrolled; with rounded to globose soralia, usually at the tips of small extensions of lobe margins; margins with (few) black cilia; lower side black, a broad marginal area without rhizinae. Medulla K+- yellow, C-, KC+ red, Pd+ orange. E; Canary Islands; La Gomera-NW; n of the Bar Epina: hiking path between the large antenna and Ermita Santa Clara. |
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Parmotrema robustum * (Degel.) Hale (260) On Erica arborea. E; Canary Islands; La Gomera-NW; n of the Bar Epina: hiking path between the large antenna and Ermita Santa Clara. |
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Parmotrema robustum * (Degel.) Hale (260) On Erica arborea. E; Canary Islands; La Gomera-NW; n of the Bar Epina: hiking path between the large antenna and Ermita Santa Clara. |
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Parmotrema robustum (Degel.) Hale (260) On Erica arborea. E; Canary Islands; La Gomera-NW; n of the Bar Epina: hiking path between the large antenna and Ermita Santa Clara. |
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Parmotrema robustum (Degel.) Hale (364) On Laurus novocanariensis. Cortex K+ yellow; medulla K-, KC+ reddish, Pd+ orange. E; La Gomera-MN; s of Las Rosas; s of Roque Blanco: near Mirador Dinero. |
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Parmotrema robustum (Degel.) Hale (364) On Laurus novocanariensis. E; La Gomera-MN; s of Las Rosas; s of Roque Blanco: near Mirador Dinero. |
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Parmotrema robustum (Degel.) Hale (364) On Laurus novocanariensis. E; La Gomera-MN; s of Las Rosas; s of Roque Blanco: near Mirador Dinero. |
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Parmotrema tinctorum * (Despr. ex Nyl.) Hale (284) On volcanic rocks. Thallus thin, loosely attached; lobes up to 2 cm broad, rounded, entire or notched; without cilia; isidia laminal, globose to cylindrical, concolorous, with brownish tips. Cortex K+ yellow; medulla K-, C+ red, Pd-. E; Canary Islands; La Gomera-NW; hiking path between Vallehermoso (Botanical Garden) and Ermita Santa Clara. |
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Parmotrema tinctorum (Despr. ex Nyl.) Hale (284) On volcanic rocks. E; Canary Islands; La Gomera-NW; hiking path between Vallehermoso (Botanical Garden) and Ermita Santa Clara. |
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Parmotrema tinctorum (Despr. ex Nyl.) Hale (284) On volcanic rocks. E; Canary Islands; La Gomera-NW; hiking path between Vallehermoso (Botanical Garden) and Ermita Santa Clara. |
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Parmotrema tinctorum (Despr. ex Nyl.) Hale (323) On volcanic rocks. E; Canary Islands; La Gomera-NW; se of Vallehermoso: El Tion. |
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Parmotrema tinctorum (Despr. ex Nyl.) Hale (323) On volcanic rocks. E; Canary Islands; La Gomera-NW; se of Vallehermoso: El Tion. |
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Parmotrema tinctorum (Despr. ex Nyl.) Hale (430) Saxicolous, on volcanic rocks. E; Canary Islands; La Gomera-NW; nnw of Vallehermoso; n of the Ermita de Coromoto; surroundings of Chijere. |
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Parmotrema tinctorum (Despr. ex Nyl.) Hale (430) Saxicolous, on volcanic rocks. E; Canary Islands; La Gomera-NW; nnw of Vallehermoso; n of the Ermita de Coromoto; surroundings of Chijere. |
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Pectenia atlantica * (Degel.) Jörg. (297) On volcanic rocks, covered with soil. Thallus rosette-forming, up to 10 cm in diameter; lobes longitudinally striated; with knob-like or coralloid isidia that may become confluent and covering the whole thallus; lower side with a blue-black tomentum, often extending the margins. Spot reactions negative. E; Canary Islands; La Gomera-MW; nnw of Arure: hiking path to Alojera. |
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Pectenia atlantica * (Degel.) Jörg. (297) On volcanic rocks, covered with soil. E; Canary Islands; La Gomera-MW; nnw of Arure: hiking path to Alojera. |
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Pectenia atlantica (Degel.) Jörg. (552) On volcanic rocks, covered with soil. E; Canary Islands; La Gomera-NW; n of the Bar Epina: n of the large antenna (footpath to Ermita St. Clara). |
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Pectenia plumbea (Lightf.) P.M. Jørg., L. Lindblom, Wedin & S. Ekman (367) On Castanea sativa. Thallus plate-like, up to 10 cm diam.; upper surface of the lobes with longitudinal and concentric ridges; lower surface with a blue-black tomentum, often extending the margin; apothecia usually numerous, up to 1 mm, disc orange-brown to red-brown, convex; margin paler (biatorine), paraplectenchymatous, hairy; epithecium brown; hymenium colourless (60-70 µm); hypothecium yellowish; Asci 8-spored (56 µm); ascospores colourless, simple (16.8-21 x 7-9.8 µm). Spot reactions negative. E; La Gomera-MN; s of Las Rosas; s of Roque Blanco: near Mirador Dinero. |
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Pectenia plumbea (Lightf.) P.M. Jørg., L. Lindblom, Wedin & S. Ekman (367) On Castanea sativa. Microscopic details. E; La Gomera-MN; s of Las Rosas; s of Roque Blanco: near Mirador Dinero. |
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Peltigera membranacea * (Ach.) Nyl. (346) On mossy soil. Thallus up to 15 cm; lobes to 1.5 cm wide, thin; margins down-turned; upper surface whitish tomentose; lower side whitish; veins pale ochre, narrow, raised; rhizines white, long (up to 7 mm), simple, bottlebrush-like; apothecia on ascending lobes, saddle-shaped. Spot tests negative. The similar P. praetextata has scale-like schizidia; P. canina with bushy rhizines. E; La Gomera-MN; s of Las Rosas; s of Roque Blanco: near Mirador Dinero. |
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Peltigera membranacea (Ach.) Nyl. (346) On mossy soil. E; La Gomera-MN; s of Las Rosas; s of Roque Blanco: near Mirador Dinero. |
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Peltigera membranacea (Ach.) Nyl. (346) On mossy soil. E; La Gomera-MN; s of Las Rosas; s of Roque Blanco: near Mirador Dinero. |
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Peltigera membranacea (Ach.) Nyl. (346) On mossy soil. Rhizinae. E; La Gomera-MN; s of Las Rosas; s of Roque Blanco: near Mirador Dinero. |
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Peltigera membranacea (Ach.) Nyl. (346) On mossy soil. E; La Gomera-MN; s of Las Rosas; s of Roque Blanco: near Mirador Dinero. |
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Peltigera praetextata * (Floerke ex Sommerf.) Zopf (348) On mossy soil. Upper surface with schizidia (small, flat leaflets); schizidia on cracks and at the lobe margins; marginal parts with very small, adpressed hairs; rarely fertile. Spot reactions negative. E; La Gomera-MN; s of Las Rosas; s of Roque Blanco: near Mirador Dinero. |
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Peltigera praetextata (Floerke ex Sommerf.) Zopf (348) On mossy soil. E; La Gomera-MN; s of Las Rosas; s of Roque Blanco: near Mirador Dinero. |
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Peltigera praetextata (Floerke ex Sommerf.) Zopf (348) On mossy soil. E; La Gomera-MN; s of Las Rosas; s of Roque Blanco: near Mirador Dinero. |
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Peltigera praetextata (Floerke ex Sommerf.) Zopf (348) On mossy soil. E; La Gomera-MN; s of Las Rosas; s of Roque Blanco: near Mirador Dinero. |
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Peltula euploca * (Ach.) Poelt (275) On nutrient-enriched volcanic rocks. Thallus consisting of peltate squamules, up to 10 mm in diameter; margins down-rolled; blackish sorediate when older; pycnidia immersed; lower surface paler, often pinkish; umbilicate (see lowest image); photobiont cyanobacterial. No spot reactions. E; Canary Islands; La Gomera-MSW; ese of Chipude: hiking path between Fortaleza and Igualero; se of the little brook. (Thanks to B. Büdel for confirmation). |
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Peltula euploca * (Ach.) Poelt (275) On nutrient-enriched volcanic rocks. E; Canary Islands; La Gomera-MSW; ese of Chipude: hiking path between Fortaleza and Igualero; se of the little brook. |
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Peltula euploca (Ach.) Poelt (275) On nutrient-enriched volcanic rocks. E; Canary Islands; La Gomera-MSW; ese of Chipude: hiking path between Fortaleza and Igualero; se of the little brook. |
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Peltula patellata (Bagl.) Swinscow & Krog (550) With Psora decipiens. On slightly carbonatic soil. Thallus squamulose; squamules orbicular, up to 2 mm diam.; margin thickened and upturned; upper surface with an epinecral layer; thallus partly paraplectenchymatous; photobiont blue-green; apothecia +- immersed, 1-2 per squamule; asci multispored (more than 50 ascospores); ascospores globose (7 µm diam.); E; Canary Islands; La Gomera-MSW; ese of Chipude: hiking path between Fortaleza and Igualero; se of the little brook. |
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Peltula patellata (Bagl.) Swinscow & Krog (550) On slightly carbonatic soil. Specimen dry. E; Canary Islands; La Gomera-MSW; ese of Chipude: hiking path between Fortaleza and Igualero; se of the little brook. |
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Peltula patellata (Bagl.) Swinscow & Krog (550) On slightly carbonatic soil. Specimen wet. E; Canary Islands; La Gomera-MSW; ese of Chipude: hiking path between Fortaleza and Igualero; se of the little brook. |
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Peltula patellata (Bagl.) Swinscow & Krog (550) On slightly carbonatic soil. Rhizohyphae on lower side. E; Canary Islands; La Gomera-MSW; ese of Chipude: hiking path between Fortaleza and Igualero; se of the little brook. |
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Peltula patellata (Bagl.) Swinscow & Krog (550) On slightly carbonatic soil. Microscopic details. E; Canary Islands; La Gomera-MSW; ese of Chipude: hiking path between Fortaleza and Igualero; se of the little brook. |
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Pertusaria amara (Ach.) Nyl. (370) On Castanea sativa. Thallus verrucuous, thick, fertile!, fertile warts +- evenly distributed, up to 1,1 mm diam.; apothecia sunken in sorediate warts; disc grey, pruinose; margin uneven-crenulate.; epithecium dark, 70 µm, hymenium colourless, 315 µm; asci 1-spored, with a broad ocular chamber); parphyses branched, richly anastomosed; ascospores colourless, simple (133-161 x 40-84 µm; wall: 9.8-15.8 µm). Medulla J+ blue; thallus and warts K- (pale brownish), C-, KC+ violet (margin of fertile warts), Pd-, UV-; taste bitter (picrolichenic acid), terpenoids. TLC by Sipman. E; La Gomera-MN; s of Las Rosas; s of Roque Blanco: near Mirador Dinero. Ident. H. Sipman. |
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Pertusaria amara (Ach.) Nyl. (370) On Castanea sativa. E; La Gomera-MN; s of Las Rosas; s of Roque Blanco: near Mirador Dinero. |
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Pertusaria amara (Ach.) Nyl. (370) On Castanea sativa. E; La Gomera-MN; s of Las Rosas; s of Roque Blanco: near Mirador Dinero. |
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Pertusaria amara (Ach.) Nyl. (370) On Castanea sativa. E; La Gomera-MN; s of Las Rosas; s of Roque Blanco: near Mirador Dinero. |
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Pertusaria amara (Ach.) Nyl. (370) On Castanea sativa. Application with KC and J (medulla). E; La Gomera-MN; s of Las Rosas; s of Roque Blanco: near Mirador Dinero. |
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Pertusaria amara (Ach.) Nyl. (370) On Castanea sativa. Microscopic details. E; La Gomera-MN; s of Las Rosas; s of Roque Blanco: near Mirador Dinero. |
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Pertusaria amara var. flotowiana * (Floerke) Erichsen (301) On volcanic rocks. Soralia (1-2 mm diam.), numerous, strongly convex, crowded, almost completely covering the cracked thallus, not confluenting. Soralia K-, C-, KC+ violet at first (later turning to red); Pd+ orange. P. amara is similar, but corticol. E; Canary Islands; La Gomera-MW; nnw of Arure: hiking path to Alojera. |
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Pertusaria amara var. flotowiana (Floerke) Erichsen (301) On volcanic rocks. E; Canary Islands; La Gomera-MW; nnw of Arure: hiking path to Alojera. |
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Pertusaria amara var. flotowiana (Floerke) Erichsen (301) On volcanic rocks. E; Canary Islands; La Gomera-MW; nnw of Arure: hiking path to Alojera. |
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Pertusaria amara var. flotowiana (Floerke) Erichsen (301) On volcanic rocks. E; Canary Islands; La Gomera-MW; nnw of Arure: hiking path to Alojera. |
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Pertusaria corallina (L.) Arnold (52) On volcanic rocks (terrace wall). Thallus thick, areolate-squamulose; covered (sometimes totally) with isidia which are short and rounded when young, later cylindrical to coralloid (up to 0.3 mm wide and 1.5 mm tall). Thallus K+ red-brown, C+ ochre to orange (permanently!), Pd+ orange. E; Canary Islands; La Gomera-MW; hiking path between Las Hayas and El Cercado. |
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Pertusaria corallina (L.) Arnold (299) On volcanic rocks. Isidia K+ yellow, KC+ orange; Pd-. E; Canary Islands; La Gomera-MW; nnw of Arure: hiking path to Alojera. |
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Pertusaria corallina (L.) Arnold (299) On volcanic rocks. E; Canary Islands; La Gomera-MW; nnw of Arure: hiking path to Alojera. |
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Pertusaria excludens Nyl. (44) On volcanic rocks. Thallus thick, rimose-cracked-areolate; with convex soralia (up to 2 mm diam.); soralia granular, paler than thallus, delineated , usually with an irregular, raised margin. Thallus K+ red, C-, Pd+ orange. E; Canary Islands; La Gomera-M; e of Chipude: top of the Fortaleza. |
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Pertusaria excludens Nyl. (44) On volcanic rocks. E; Canary Islands; La Gomera-M; e of Chipude: top of the Fortaleza. |
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Pertusaria excludens Nyl. (54) On volcanic rocks (terrace wall). Thallus K+ red, C-, Pd+ deep orange. E; Canary Islands; La Gomera-MW; hiking path between Las Hayas and El Cercado. |
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Pertusaria excludens Nyl. (374) On volcanic rocks. Thallus thick, rimose-cracked-areolate; with convex soralia (up to 1.3 mm diam.); soralia granular, paler than thallus, delineated , usually with an irregular, raised margin. Thallus K+ red, C-, Pd+ yellow -->orange. E; Canary Islands; La Gomera-MW; nnw of Arure: hiking path to Alojera. |
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Pertusaria excludens Nyl. (374) On volcanic rocks. E; Canary Islands; La Gomera-MW; nnw of Arure: hiking path to Alojera. |
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Pertusaria excludens Nyl. (374) On volcanic rocks. E; Canary Islands; La Gomera-MW; nnw of Arure: hiking path to Alojera. |
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Pertusaria excludens Nyl. (374) On volcanic rocks. Spot tests. E; Canary Islands; La Gomera-MW; nnw of Arure: hiking path to Alojera. |
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Pertusaria excludens Nyl. (386) On volcanic rocks. E; Canary Islands; La Gomera-NW; n of the Bar Epina: hiking path between the large antenna and Ermita Santa Clara. |
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Pertusaria excludens Nyl. (386) On volcanic rocks. Spot tests. E; Canary Islands; La Gomera-NW; n of the Bar Epina: hiking path between the large antenna and Ermita Santa Clara. |
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Pertusaria flavicans Lamy (314) On volcanic rocks. Thallus thick, warted-areolate; warts semiglobose, up to 1 mm diam.; soralia rounded, up to 1 mm diam.; delimited at first, later confluenting; paler than thallus; soredia granular. Th.allus K+ yellow, C+ orange, KC+ orange, Pd-; UV+ orange. E; Canary Islands; La Gomera-MW; nnw of Arure: hiking path to Alojera. New to La Gomera. |
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Pertusaria flavicans Lamy (314) On volcanic rocks. E; Canary Islands; La Gomera-MW; nnw of Arure: hiking path to Alojera. |
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Pertusaria flavicans Lamy (314) On volcanic rocks. Spot tests, UV test. E; Canary Islands; La Gomera-MW; nnw of Arure: hiking path to Alojera. |
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Pertusaria flavocorallina Coppins & Muhr (415) Saxicol; on volcanic rocks. Thallus thick, areolate; with cylindrical isidia (apex dark). Resembles to Lepra (Pertusaria) corallina, but thallus pale yellowish-grey. Thallus K+ red, C+ orange (permanent), KC+ orange, Pd+ red; UV+ pale orange. E; Canary Islands; La Gomera-M; R16 between Casa Olsen and Imada: Lomo de las Cardos. New to La Gomera. |
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Pertusaria flavocorallina Coppins & Muhr (415) Saxicol; on volcanic rocks. E; Canary Islands; La Gomera-M; R16 between Casa Olsen and Imada: Lomo de las Cardos. |
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Pertusaria flavocorallina Coppins & Muhr (415) Saxicol; on volcanic rocks. E; Canary Islands; La Gomera-M; R16 between Casa Olsen and Imada: Lomo de las Cardos. |
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Pertusaria flavocorallina Coppins & Muhr (415) Saxicol; on volcanic rocks. Application with K, C, Pd. E; Canary Islands; La Gomera-M; R16 between Casa Olsen and Imada: Lomo de las Cardos. |
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Pertusaria hymenea (Ach.) Schaer. (371) On Castanea sativa. Thallus continuous, with rimose cracks, +- waxy; fertile warts up to 1.5 mm diam.; semi-globose, +- irregular; apothecial disc widening, black; margin uneven; epithecium grey-brown; hymenium colourless (350 µm); hypothecium colourless; asci 8-spored; apothecia colourless, simple, ellipsoid, wall 9.8 µm (94.5-102 x 35-56 µm). Epithecium K+ violet; thallus K+ yellow, C+ orange, KC+ deep orange, P-; UV+ orange. E; La Gomera-MN; s of Las Rosas; s of Roque Blanco: near Mirador Dinero. |
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Pertusaria hymenea (Ach.) Schaer. (371) On Castanea sativa. E; La Gomera-MN; s of Las Rosas; s of Roque Blanco: near Mirador Dinero. |
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Pertusaria hymenea (Ach.) Schaer. (371) On Castanea sativa. Microscopic details. E; La Gomera-MN; s of Las Rosas; s of Roque Blanco: near Mirador Dinero. |
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Pertusaria pertusa var. rupestris (DC.) Dalla Torre & Sarnth. (300) On volcanic rocks. Thallus thick, yellowish grey to pale grey, tuberculate; apothecia perithecioid; fertile warts crowded, irregular (up to 2 mm diam.), semiglobose, basally restricted; apex +- flattened; with 5-6 black punctiform ostioles per wart; asci 1-2 spored; ascospores colourless, simple (123-250 x 32-88 µm); with thick and multi-layered wall. Thallus K+ yellow, C-, KC+ yellow, Pd+ orange-yellow, UV+ pale orange. E; Canary Islands; La Gomera-MW; nnw of Arure: hiking path to Alojera. |
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Pertusaria pertusa var. rupestris (DC.) Dalla Torre & Sarnth. (300) On volcanic rocks. E; Canary Islands; La Gomera-MW; nnw of Arure: hiking path to Alojera. |
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Pertusaria pertusa var. rupestris (DC.) Dalla Torre & Sarnth. (300) On volcanic rocks. E; Canary Islands; La Gomera-MW; nnw of Arure: hiking path to Alojera. |
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Pertusaria pertusa var. rupestris (DC.) Dalla Torre & Sarnth. (300) On volcanic rocks. Application with K and Pd. E; Canary Islands; La Gomera-MW; nnw of Arure: hiking path to Alojera. |
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Pertusaria pertusa var. rupestris (DC.) Dalla Torre & Sarnth. (300) On volcanic rocks. Microscopic details. E; Canary Islands; La Gomera-MW; nnw of Arure: hiking path to Alojera. |
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Pertusaria rupicola (Fr.) Harm. (43) On volcanic rocks. Thallus yellowish-greenish, thick, irregular, warty-verrucose; apothecia up to 2.3 mm diam.; developping at apices of warts; disc black, irregular, often splitted by thalline tissue; margin thick, irregular, often +- crenate; epithecium olive-brown; hymenium colourless (380 µm); ascospores colourless, simple, thick-walled, walls zoned (98-123 x 36.8-45.5 µm). Thallus K+ yellow, C+ orange (permanently), KC+ orange, Pd-; UV+ orange. E; Canary Islands; La Gomera-M; e of Chipude: Fortaleza (via ferrata). |
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Pertusaria rupicola * (Fr.) Harm. (43) On volcanic rocks. E; Canary Islands; La Gomera-M; e of Chipude: Fortaleza (via ferrata). |
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Pertusaria rupicola (Fr.) Harm. (43) On volcanic rocks. E; Canary Islands; La Gomera-M; e of Chipude: Fortaleza (via ferrata). |
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Pertusaria rupicola (Fr.) Harm. (43) On volcanic rocks. Splitting of the apothecial disc. E; Canary Islands; La Gomera-M; e of Chipude: Fortaleza (via ferrata). |
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Pertusaria rupicola (Fr.) Harm. (43) On volcanic rocks. Application with C. E; Canary Islands; La Gomera-M; e of Chipude: Fortaleza (via ferrata). |
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Pertusaria rupicola (Fr.) Harm. (43) On volcanic rocks. Microscopic details. E; Canary Islands; La Gomera-M; e of Chipude: Fortaleza (via ferrata). |
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Pertusaria rupicola * (Fr.) Harm. (302) On volcanic rocks. E; Canary Islands; La Gomera-MW; nnw of Arure: hiking path to Alojera. |
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Pertusaria rupicola (Fr.) Harm. (312) On volcanic rocks. E; Canary Islands; La Gomera-MW; nnw of Arure: hiking path to Alojera. |
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Pertusaria rupicola (Fr.) Harm. (312) On volcanic rocks. E; Canary Islands; La Gomera-MW; nnw of Arure: hiking path to Alojera. |
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Physcia adscendens (Fr.) Oliv. (51) On twigs of dead Cistus monspeliensis. Lobes with marginal cilia; lobe ends raised, helmet-like (difference to P. tenella); soralia on the lower side of the helmets; upper surface with pseudocyphellae (better visible when wet). Cortex K+ yellow, medulla K-. E; Canary Islands; La Gomera-M; e of Chipude: n of Fortaleza. |
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Physcia adscendens (Fr.) Oliv. (328) On volcanic rocks. E; Canary Islands; La Gomera-NW; se of Vallehermoso: El Tion. |
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Physcia albinea (Ach.) Nyl. (516) Saxicolous, on volcanic rocks. Lobes 0.5-1 mm wide, convex; upper surface not maculate; lower surface pale brown, rhizine simple; apothecia 1-4 mm diam.; disc flat; margin lecanorine, unregular; ascospores 1-septate, pale brown (14-19 x 7-10 µm); photobiont green. Cortex K+ yellow; medulla: K-. (Resembles P. stellaris, but without maculae). E; Canary Islands; La Gomera-MSW; ese of Chipude: hiking path between Fortaleza and Igualero. |
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Physcia caesia * (Hoffm.) Fürnr. (190317) On nutrient-enriched volcanic rocks. Lobe surface blue-grey; with convex soralia (usually laminal). Cortex, medulla K+ yellow. E; Canary Islands; La Gomera-MSW; ese of Chipude: hiking path between Fortaleza and Igualero; se of the little brook. |
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Physcia caesia * (Hoffm.) Fürnr. (190317) On nutrient-enriched volcanic rocks. E; Canary Islands; La Gomera-MSW; ese of Chipude: hiking path between Fortaleza and Igualero; se of the little brook. |
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Physcia tribacia * (Ach.) Nyl. (22) On volcanic rocks. Thallus irregular, consisting of +- appressed lobes (but also ascending), lobe ends sometimes faintly pruinose, margins with crenulations, tips +- granular sorediate; sometimes lip-shaped; lower cortex of the lobes pseudoparenchymatous (paraplectenchymatous; see photo 5); apothecia rare (up to 1 mm diam.), disc flat, margin lecanorine. Cortex K+ yellow; medulla K-. Distinguished from the very similar (and common) P. dubia by absence of white spots on the upper surface. The latter has a prosoplectenchymatous lower cortex. E; Canary Islands; La Gomera-MS; e of Imada: El Azadoe. |
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Physcia tribacia (Ach.) Nyl. (22) On volcanic rocks. E; Canary Islands; La Gomera-MS; e of Imada: El Azadoe. |
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Physcia tribacia (Ach.) Nyl. (22) On volcanic rocks. E; Canary Islands; La Gomera-MS; e of Imada: El Azadoe. |
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Physcia tribacia (Ach.) Nyl. (22) On volcanic rocks. E; Canary Islands; La Gomera-MS; e of Imada: El Azadoe. |
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Physcia tribacia (Ach.) Nyl. (22) On volcanic rocks. Microscopic details. E; Canary Islands; La Gomera-MS; e of Imada: El Azadoe. |
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Physcia tribacia (Ach.) Nyl. (270) On volcanic rocks. E; Canary Islands; La Gomera-MSW; ese of Chipude: hiking path between Fortaleza and Igualero; se of the little brook. |
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Physcia tribacia (Ach.) Nyl. (270) On volcanic rocks. E; Canary Islands; La Gomera-MSW; ese of Chipude: hiking path between Fortaleza and Igualero; se of the little brook. |
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Physcia tribacia (Ach.) Nyl. (270) On volcanic rocks. E; Canary Islands; La Gomera-MSW; ese of Chipude: hiking path between Fortaleza and Igualero; se of the little brook. |
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Physcia tribacia (Ach.) Nyl. (270) On volcanic rocks. E; Canary Islands; La Gomera-MSW; ese of Chipude: hiking path between Fortaleza and Igualero; se of the little brook. |
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Physcia tribacia (Ach.) Nyl. (270) On volcanic rocks. E; Canary Islands; La Gomera-MSW; ese of Chipude: hiking path between Fortaleza and Igualero; se of the little brook. |
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Physcia tribacia * (Ach.) Nyl. (382) On volcanic rocks. E; Canary Islands; La Gomera-NW; n of the Bar Epina: n of the large antenna (hiking path to Ermita St. Clara). |
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Physcia tribacia (Ach.) Nyl. (382) On volcanic rocks. E; Canary Islands; La Gomera-NW; n of the Bar Epina: n of the large antenna (hiking path to Ermita St. Clara). |
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Physconia enteroxantha (Ny.) Poelt (533) Terricolous (on eroded rocks). Thallus consisting of overlapping lobes; pruinose; margins bent up; with grey to slightly yellowish soralia; medulla yellow in parts; lower side pale brown, corticate; with bottle-brush-like rhizines. E; Canary Islands; La Gomera-MW; nnw of Arure: hiking path to Alojera. |
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Physconia enteroxantha (Ny.) Poelt (533) Terricolous (on eroded rocks). E; Canary Islands; La Gomera-MW; nnw of Arure: hiking path to Alojera. |
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Placopyrenium bucekii (Nádv. & Servít) Breuss (472) Terricolous (on erodet volcanic tuff). Thallus areolate to placodioid; the areoles are polygonal in the centre, elongate in the periphery (often with a black margin); areoles are thick, flat, undivided and covered with a coarse whitish pruina; lower side black, with thick black "rhizines"; medulla paraplectenchymatous; perithecia +- immersed in the squamules; asci 8-spored; ascospores colourless, simple, with "ornamentations" (18.2-21 x 7-8.1 µm). E; Canary Islands; La Gomera-Central; se of Imada: El Azadoe. (Ident. O. Breuss); new to La Gomera. |
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Placopyrenium bucekii (Nádv. & Servít) Breuss (472) Terricolous (on erodet volcanic tuff). E; Canary Islands; La Gomera-Central; se of Imada: El Azadoe. |
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Placopyrenium bucekii (Nádv. & Servít) Breuss (472) Terricolous (on erodet volcanic tuff). E; Canary Islands; La Gomera-Central; se of Imada: El Azadoe. |
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Placopyrenium bucekii (Nádv. & Servít) Breuss (472) Terricolous (on erodet volcanic tuff). Microscopic details. E; Canary Islands; La Gomera-Central; se of Imada: El Azadoe. |
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Porpidia cinereoatra * (Ach.) Hertel & Knoph (55) On volcanic rocks (terrace wall). Thallus thick, areolate; areoles +- flat, up to 2 mm diam.; apothecia up to1.5 mm diam., often in clusters (up to 5 apothecia), immersed; disc flat to slightly convex, pruinose (at least when young), margin inconspicuous, black; ascospores colourless, simple, ellipsoid, 13.3-18.2 x 7.4-9.1 µm. No spot reactions. E; Canary Islands; La Gomera-MW; hiking path between Las Hayas and El Cercado. |
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Porpidia cinereoatra (Ach.) Hertel & Knoph (55) On volcanic rocks (terrace wall). E; Canary Islands; La Gomera-MW; hiking path between Las Hayas and El Cercado. |
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Porpidia cinereoatra (Ach.) Hertel & Knoph (55) On volcanic rocks (terrace wall). E; Canary Islands; La Gomera-MW; hiking path between Las Hayas and El Cercado. |
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Porpidia cinereoatra (Ach.) Hertel & Knoph (55) On volcanic rocks (terrace wall). Microscopic details. E; Canary Islands; La Gomera-MW; hiking path between Las Hayas and El Cercado. |
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Pseudocyphellaria aurata (Ach.) Vainio (15) On Laurus canariensis. Granular soralia and pseudocyphellae (lower side) golden yellow (Pseucocyphellaria crocata with white pseudocyphellae); apothecia rare, +- stalked; disc concave to plane, brown; margin with yellow soralia; lower surface tomentose. E; Canary Islands; La Gomera-NW; n of the Bar Epina: surrounding of the large antenna. |
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Pseudocyphellaria aurata (Ach.) Vainio (15) On Laurus canariensis. E; Canary Islands; La Gomera-NW; n of the Bar Epina: surrounding of the large antenna. |
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Pseudocyphellaria aurata (Ach.) Vainio (15) On Laurus canariensis. Lower side. E; Canary Islands; La Gomera-NW; n of the Bar Epina: surrounding of the large antenna. |
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Pseudocyphellaria aurata (Ach.) Vainio (402) Corticol; on Erica arborea. E; Canary Islands; La Gomera-M: Pajarito. |
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Psora decipiens (Hedw.) Hoffm. (511) On slightly carbonatic soil. Thallus consists of brownish to pale pinkish squamules; squamules scattered or overlapping, up to 4 mm; margins often upturned, white-pruinose; lower side white; apothecia up to 1.5 mm; disc black, margin paler, often pruinose, disappearing when old; usually only one apothecium per squamule (marginal). No spot reactions. E; Canary Islands; La Gomera-MSW; ese of Chipude: hiking path between Fortaleza and Igualero; se of the little brook. (Together with Gyalolechia bracteata and Peltiula patellata). |
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Psora decipiens (Hedw.) Hoffm. (511) On slightly carbonatic soil. E; Canary Islands; La Gomera-MSW; ese of Chipude: hiking path between Fortaleza and Igualero; se of the little brook. |
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Psora decipiens (Hedw.) Hoffm. (511) On slightly carbonatic soil. E; Canary Islands; La Gomera-MSW; ese of Chipude: hiking path between Fortaleza and Igualero; se of the little brook. |
Flechtenbilder (R-Z)
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Ramalina bourgeana * Mont. ex Nyl. (281) On volcanic rocks. Thallus rigid, erected; lobes up to some cm diam., not linear; upper surface usually reticulately ridged; without isidia, soralia or pseudocyphellae; lower side only weakly ridged; apothecia often numerous; disc up to 1 cm diameter, flat to concave; margin crenate. A very variable species. Medulla K+ red, C-, Pd+ deep orange. E; Canary Islands; La Gomera-NW; w of Vallehermoso (hiking path Botan. Garden --> Ermita St. Clara). |
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Ramalina bourgeana Mont. ex Nyl. (281) On volcanic rocks. E; Canary Islands; La Gomera-NW; w of Vallehermoso (hiking path Botan. Garden --> Ermita St. Clara). |
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Ramalina bourgeana Mont. ex Nyl. (281) On volcanic rocks. E; Canary Islands; La Gomera-NW; w of Vallehermoso (hiking path Botan. Garden --> Ermita St. Clara). |
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Ramalina bourgeana Mont. ex Nyl. (281) On volcanic rocks. E; Canary Islands; La Gomera-NW; w of Vallehermoso (hiking path Botan. Garden --> Ermita St. Clara). |
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Ramalina bourgeana Mont. ex Nyl. (281) On volcanic rocks. Application with K and Pd. E; Canary Islands; La Gomera-NW; w of Vallehermoso (hiking path Botan. Garden --> Ermita St. Clara). |
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Ramalina bourgeana * Mont. ex Nyl. (289) On volcanic rocks. Medulla K+ red, C-, KC-, Pd+ orange. E; Canary Islands; La Gomera-MW; nnw of Arure: hiking path to Alojera. |
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Ramalina bourgeana Mont. ex Nyl. (289) On volcanic rocks. E; Canary Islands; La Gomera-MW; nnw of Arure: hiking path to Alojera. |
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Ramalina bourgeana Mont. ex Nyl. (289) On volcanic rocks. E; Canary Islands; La Gomera-MW; nnw of Arure: hiking path to Alojera. |
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Ramalina bourgeana Mont. ex Nyl. (289) On volcanic rocks. E; Canary Islands; La Gomera-MW; nnw of Arure: hiking path to Alojera. |
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Ramalina bourgeana Mont. ex Nyl. (289) On volcanic rocks. Application with K and Pd. E; Canary Islands; La Gomera-MW; nnw of Arure: hiking path to Alojera. |
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Ramalina bourgeana * Mont. ex Nyl. (317) Wall of the house in El Tion. E; Canary Islands; La Gomera-NW; se of Vallehermoso: El Tion. |
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Ramalina bourgeana Mont. ex Nyl. (317) Wall of the house in El Tion. E; Canary Islands; La Gomera-NW; se of Vallehermoso: El Tion. |
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Ramalina decipiens Mont. (47) On volcanic rocks (terrace wall). Thallus 5.5 cm long; lobes up to 5 mm wide, occasionally branched, ± flat, often longitudinally striated; pseudocyphellae inconspicuous; isidia and soralia absent; apothecial disc concave; margin crenate; pycnidia common, marginal, laminal and terminal, ostioles black. Thallus K+ red, Pd+ orange. E; Canary Islands; La Gomera-MW; hiking path between Las Hayas and El Cercado. |
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Ramalina decipiens Mont. (47) On volcanic rocks (terrace wall). E; Canary Islands; La Gomera-MW; hiking path between Las Hayas and El Cercado. |
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Ramalina decipiens Mont. (47) On volcanic rocks (terrace wall). E; Canary Islands; La Gomera-MW; hiking path between Las Hayas and El Cercado. |
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Ramalina decipiens Mont. (47) On volcanic rocks (terrace wall). Spot tests with K and Pd. E; Canary Islands; La Gomera-MW; hiking path between Las Hayas and El Cercado. |
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Ramalina huei Harm. (280) On branches of Pinus canariensis. Thallus pendulous (6 cm long); laciniae up to 7 mm wide near the holdfast; pseudocyphellae laminal and lateral (conspicuous especially at the base of laciniae), when these are lateral, they often induce separation of upper and lower cortex layers, thus exposing the medulla; apothecia lateral (up to 5 mm diam.); disc deeply concave; margin occasionally with extensions. Spot tests all negative (KC+ blue-green). Often together with R. implectens. E; Canary Islands; La Gomera-NW; hiking path between Vallehermoso (Botanical Garden) and Ermita Santa Clara. |
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Ramalina huei Harm. (280) On branches of Pinus canariensis. Pseudocyphellae. E; Canary Islands; La Gomera-NW; hiking path between Vallehermoso (Botanical Garden) and Ermita Santa Clara. |
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Ramalina huei Harm. (280) On branches of Pinus canariensis. Apothecia. E; Canary Islands; La Gomera-NW; hiking path between Vallehermoso (Botanical Garden) and Ermita Santa Clara. |
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Ramalina implectens * Nyl. (279) On branches of Pinus canariensis. Thallus (resembles Usnea spec.) subpendulous, up to 15 cm long; lobes (laciniae) strap-shaped, smooth, +- canaliculate, divergently branched, with lateral branchlets; pseudocyphellae not evident; apothecia common, in distal half of branches, up to 5 mm diam.; disc concave. Thallus K+ red, C-, Pd+ orange. Often together with R. huei. E; Canary Islands; La Gomera-NW; hiking path between Vallehermoso (Botanical Garden) and Ermita Santa Clara. |
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Ramalina implectens Nyl. (279) On branches of Pinus canariensis. E; Canary Islands; La Gomera-NW; hiking path between Vallehermoso (Botanical Garden) and Ermita Santa Clara. |
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Ramalina implectens Nyl. (279) On branches of Pinus canariensis. E; Canary Islands; La Gomera-NW; hiking path between Vallehermoso (Botanical Garden) and Ermita Santa Clara. |
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Ramalina implectens Nyl. (279) On branches of Pinus canariensis. Application with K and Pd. E; Canary Islands; La Gomera-NW; hiking path between Vallehermoso (Botanical Garden) and Ermita Santa Clara. |
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Ramalina implectens??? Nyl. (286) On vertical volcanic rocks. Thallus subpendulous, up to 8 cm long; lobes (laciniae) strap-shaped (- 1.5 mm broad), smooth, divergently branched, with lateral branchlets; pseudocyphellae not evident; apothecia not seen; pycnidia black, lateral and marginal; ostioles pale. Thallus K+ red, C-, Pd+ orange. E; Canary Islands; La Gomera-MW; nnw of Arure: hiking path to Alojera. |
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Ramalina implectens??? Nyl. (286) On vertical volcanic rocks. E; Canary Islands; La Gomera-MW; nnw of Arure: hiking path to Alojera. |
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Ramalina implectens??? Nyl. (286) On vertical volcanic rocks. Pycnidia with pale ostioles. E; Canary Islands; La Gomera-MW; nnw of Arure: hiking path to Alojera. |
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Ramalina implectens??? Nyl. (286) On vertical volcanic rocks. Application wit K and Pd. E; Canary Islands; La Gomera-MW; nnw of Arure: hiking path to Alojera. |
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Ramalina krogiae Guissard & Sérus. (48) On volcanic rocks (terrace wall). Thallus up to 3 cm, brownish near the base; lobes solid, flat, subterete near apices, up to 5 mm broad, ends finely divided; granular soralia marginal or with coarse, corticate granules (photos 5/6); apothecia rare, lateral (photo 4). Thallus K-, Pd-. E; Canary Islands; La Gomera-MW; hiking path between Las Hayas and El Cercado. |
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Ramalina krogiae Guissard & Sérus. (48) On volcanic rocks (terrace wall). E; Canary Islands; La Gomera-MW; hiking path between Las Hayas and El Cercado. |
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Ramalina krogiae Guissard & Sérus. (48) On volcanic rocks (terrace wall). E; Canary Islands; La Gomera-MW; hiking path between Las Hayas and El Cercado. |
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Ramalina krogiae Guissard & Sérus. (48) On volcanic rocks (terrace wall). E; Canary Islands; La Gomera-MW; hiking path between Las Hayas and El Cercado. |
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Ramalina krogiae Guissard & Sérus. (48) On volcanic rocks (terrace wall). E; Canary Islands; La Gomera-MW; hiking path between Las Hayas and El Cercado. |
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Ramalina krogiae Guissard & Sérus. (48) On volcanic rocks (terrace wall). E; Canary Islands; La Gomera-MW; hiking path between Las Hayas and El Cercado. |
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Ramalina krogiae Guissard & Sérus. (242) On vertical volcanic rocks. Thallus up to 8 cm; lobes solid, flat, subterete near apices, ends finely divided; granular soralia marginal or with coarse, corticate granules; apothecia rare. Test spots all negative. E; Canary Islands; La Gomera-NW; s of Vallehermoso: Camino Forestal de la Meseta. |
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Ramalina krogiae Guissard & Sérus. (242) On vertical volcanic rocks. E; Canary Islands; La Gomera-NW; s of Vallehermoso: Camino Forestal de la Meseta. |
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Ramalina krogiae Guissard & Sérus. (242) On vertical volcanic rocks. E; Canary Islands; La Gomera-NW; s of Vallehermoso: Camino Forestal de la Meseta. |
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Ramalina krogiae Guissard & Sérus. (242) On vertical volcanic rocks. E; Canary Islands; La Gomera-NW; s of Vallehermoso: Camino Forestal de la Meseta. |
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Ramalina krogiae Guissard & Sérus. (242) On vertical volcanic rocks. E; Canary Islands; La Gomera-NW; s of Vallehermoso: Camino Forestal de la Meseta. |
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Ramalina pitardii Hue (241) On vertical volcanic rocks. Thallus soft, up to 4.5 cm long; holdfast not clearly delimited; laciniae (lobes) up to 3 mm broad, hollow in parts (inflated), often fenestrate and perforate (caused by breaking pseudocyphellae); no soralia but soredia emerging on inside surfaces of the lobes; apothecia not seen. Spot tests all negative. E; Canary Islands; La Gomera-NW; s of Vallehermoso: Camino Forestal de la Meseta. |
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Ramalina pitardii Hue (241) On vertical volcanic rocks. E; Canary Islands; La Gomera-NW; s of Vallehermoso: Camino Forestal de la Meseta. |
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Ramalina pitardii Hue (241) On vertical volcanic rocks. E; Canary Islands; La Gomera-NW; s of Vallehermoso: Camino Forestal de la Meseta. |
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Ramalina pitardii Hue (241) On vertical volcanic rocks. Thallus soft, up to 2 cm long; laciniae (lobes) up to 3 mm broad, hollow in parts (inflated), often fenestrate and perforate (caused by breaking pseudocyphellae); no soralia/isidia; apothecia subapical/apical, spurred (up to 5 mm diam.); disc concav to flat. Spot tests: K-, C-, KC+ gelb; Pd-. E; Canary Islands; La Gomera-NW; s of Vallehermoso: Camino Forestal de la Meseta. |
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Ramalina pitardii Hue (241) On vertical volcanic rocks. Lower side. E; Canary Islands; La Gomera-NW; s of Vallehermoso: Camino Forestal de la Meseta. |
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Ramalina pitardii Hue (241) On vertical volcanic rocks. E; Canary Islands; La Gomera-NW; s of Vallehermoso: Camino Forestal de la Meseta. |
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Ramalina pitardii Hue (241) On vertical volcanic rocks. E; Canary Islands; La Gomera-NW; s of Vallehermoso: Camino Forestal de la Meseta. |
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Ramalina pitardii Hue (241) On vertical volcanic rocks. Thallus soft, up to 4 cm long; laciniae (lobes) up to 2 mm broad, hollow in parts (inflated), often fenestrate and perforate (caused by breaking pseudocyphellae); no soralia/isidia; apothecia subapical/apical, spurred (up to 5 mm diam.); disc flat to slightly convex. Thallus P+ orange. E; Canary Islands; La Gomera-NW; s of Vallehermoso: Camino Forestal de la Meseta. |
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Ramalina pitardii Hue (241) On vertical volcanic rocks. E; Canary Islands; La Gomera-NW; s of Vallehermoso: Camino Forestal de la Meseta. |
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Ramalina pitardii Hue (241) On vertical volcanic rocks. E; Canary Islands; La Gomera-NW; s of Vallehermoso: Camino Forestal de la Meseta. |
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Ramalina subfarinacea (Nyl. ex Cromb.) Nyl. (40) On volcanic rocks. Thallus up to 5 cm, erect, branched, resembling R. farinacea; lobes flattened; soralia marginal, well delimited, rounded or elliptical, concave to flat; with coars granular soredia, sometimes with projections (photo 4); apothecia rare, laminal marginal or subterminal (photo 5). Thallus K+- yellowish; soralia Pd+ orange (red). E; Canary Islands; La Gomera-M; e of Chipude: Fortaleza (via ferrata). |
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Ramalina subfarinacea (Nyl. ex Cromb.) Nyl. (40) On volcanic rocks. E; Canary Islands; La Gomera-M; e of Chipude: Fortaleza (via ferrata). |
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Ramalina subfarinacea (Nyl. ex Cromb.) Nyl. (40) On volcanic rocks. E; Canary Islands; La Gomera-M; e of Chipude: Fortaleza (via ferrata). |
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Ramalina subfarinacea (Nyl. ex Cromb.) Nyl. (40) On volcanic rocks. E; Canary Islands; La Gomera-M; e of Chipude: Fortaleza (via ferrata). |
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Ramalina subfarinacea (Nyl. ex Cromb.) Nyl. (40) On volcanic rocks. E; Canary Islands; La Gomera-M; e of Chipude: Fortaleza (via ferrata). |
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Ramalina subfarinacea (Nyl. ex Cromb.) Nyl. (244) On vertical volcanic rocks. Thallus up to 6 cm, erect, branched, resembling R. farinacea; lobes flattened; soralia marginal, well delimited, rounded or elliptical, concave to flat; with coars granular soredia. Thallus K+ red, C-; thallus/soralia Pd+ orange. E; Canary Islands; La Gomera-NW; s of Vallehermoso: Camino Forestal de la Meseta. |
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Ramalina subfarinacea (Nyl. ex Cromb.) Nyl. (244) On vertical volcanic rocks. E; Canary Islands; La Gomera-NW; s of Vallehermoso: Camino Forestal de la Meseta. |
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Ramalina subfarinacea (Nyl. ex Cromb.) Nyl. (244) On vertical volcanic rocks. E; Canary Islands; La Gomera-NW; s of Vallehermoso: Camino Forestal de la Meseta. |
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Ramalina subfarinacea (Nyl. ex Cromb.) Nyl. (244) On vertical volcanic rocks. Soralia. E; Canary Islands; La Gomera-NW; s of Vallehermoso: Camino Forestal de la Meseta. |
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Ramalina subfarinacea (Nyl. ex Cromb.) Nyl. (244) On vertical volcanic rocks. Application with K and Pd. E; Canary Islands; La Gomera-NW; s of Vallehermoso: Camino Forestal de la Meseta. |
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Ramalina subfarinacea (Nyl. ex Cromb.) Nyl. (287) On vertical volcanic rocks. Thallus up to 3 cm, erect, branched, resembling R. farinacea; lobes flattened, terete at apices; soralia marginal, well delimited, rounded or elliptical, flat to convex; with coars granular soredia; sometimes with projections. Thallus K+ yellow (soralia K+ red), C-, KC-; thallus/soralia Pd+ orange --> reddish. E; Canary Islands; La Gomera-MW; nnw of Arure: hiking path to Alojera. |
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Ramalina subfarinacea (Nyl. ex Cromb.) Nyl. (287) On vertical volcanic rocks. E; Canary Islands; La Gomera-MW; nnw of Arure: hiking path to Alojera. |
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Ramalina subfarinacea (Nyl. ex Cromb.) Nyl. (287) On vertical volcanic rocks. Soralia, projections. E; Canary Islands; La Gomera-MW; nnw of Arure: hiking path to Alojera. |
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Ramalina subfarinacea (Nyl. ex Cromb.) Nyl. (287) On vertical volcanic rocks. Application with K and Pd. E; Canary Islands; La Gomera-MW; nnw of Arure: hiking path to Alojera. |
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Rhizocarpon geographicum (L.) DC. (522) Saxicol, on volcanic rocks. Thallus areolate, often mosaic-forming; areoles delimited by a black hypothallus; apothecia black, irregular in shape, up to 1.5 mm diam., sitting between the areoles. Medulla K-, KC and C red (or no reaction), Pd+ orange-red (or no reaction); UV bright orange. E; Canary Islands; La Gomera-MSW; ese of Chipude: hiking path between Fortaleza and Igualero. |
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Rhizocarpon geographicum (L.) DC. (522) Saxicol, on volcanic rocks. E; Canary Islands; La Gomera-MSW; ese of Chipude: hiking path between Fortaleza and Igualero. |
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Rhizocarpon geographicum (L.) DC. (537) Saxicol, on volcanic rocks. E; Canary Islands; La Gomera-MW; nnw of Arure: hiking path to Alojera. |
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Rhizocarpon geographicum (L.) DC. (537) Saxicol, on volcanic rocks. Ascospores. E; Canary Islands; La Gomera-MW; nnw of Arure: hiking path to Alojera. |
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Rinodina beccariana var. lavicola (Steiner) Matzer & Mayrhofer (485) Saxicol; on volcanic rocks. Thallus crustose, pale grey, areolate; apothecia (-1 mm diam.), semi-immersed at first, later sessile; disc black, +- flat; thalline margin excluded with age, proper margin lecideine, persistent; epithecium brown; hymenium colourless (110 μm); hypothecium colourless; asci 8-spored; ascospores 1-septate, brown, 17-24.5 x (7.7-14 μm), Pachysporaria-type (with rounded lumina); photobiont green. Thallus K+ yellow, C-, KC+ orange, P+- yellow. E; Canary Islands; La Gomera-NNW; se of Vallehermoso; nw of El Tion; near Garabato. (Ident. V. Wirth). New to La Gomera. |
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Rinodina beccariana var. lavicola (Steiner) Matzer & Mayrhofer (485) Saxicol; on volcanic rocks. E; Canary Islands; La Gomera-NNW; se of Vallehermoso; nw of El Tion; near Garabato. (Ident. V. Wirth). |
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Rinodina beccariana var. lavicola (Steiner) Matzer & Mayrhofer (485) Saxicol; on volcanic rocks. E; Canary Islands; La Gomera-NNW; se of Vallehermoso; nw of El Tion; near Garabato. (Ident. V. Wirth). |
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Rinodina beccariana var. lavicola (Steiner) Matzer & Mayrhofer (485) Saxicol; on volcanic rocks. Microscopic details. E; Canary Islands; La Gomera-NNW; se of Vallehermoso; nw of El Tion; near Garabato. (Ident. V. Wirth). |
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Roccella fuciformis * (L.) DC. (283) On volcanic rocks. Thallus consisting of flat and smooth branches; soralia marginal, well delimited, granular; holdfast black and white. Cortex C-; subcortex C-; soralia C+ red. E; Canary Islands; La Gomera-NW; hiking path between Vallehermoso (Botanical Garden) and Ermita Santa Clara. |
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Roccella fuciformis * (L.) DC. (283) On volcanic rocks. Together with R. tinctoria. E; Canary Islands; La Gomera-NW; hiking path between Vallehermoso (Botanical Garden) and Ermita Santa Clara. |
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Roccella phycopsis * (Ach.) Ach. (319) On a house wall, made of volcanic rocks. Thallus consisting of terete, foveate or nearly smooth branches; soralia well delimited, with granular soredia; holdfast yellow. Thallus K-; cortex C+ red; soralia C+ red !). E; Canary Islands; La Gomera-NW; se of Vallehermoso: El Tion. |
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Roccella phycopsis (Ach.) Ach. (319) On a house wall, made of volcanic rocks. Holdfast. E; Canary Islands; La Gomera-NW; se of Vallehermoso: El Tion. |
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Roccella phycopsis (Ach.) Ach. (319) On a house wall, made of volcanic rocks. Application with C. (The red color fades very quickly). E; Canary Islands; La Gomera-NW; se of Vallehermoso: El Tion. |
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Roccella tinctoria * DC. (282) On volcanic rocks. Thallus consisting of terete, foveate or smooth branches; soralia well delimited, granular; holdfast black and white. Thallus K-; cortex C-; subcortex C+ red; soralia C+ red. E; Canary Islands; La Gomera-NW; hiking path between Vallehermoso (Botanical Garden) and Ermita Santa Clara. |
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Roccella tinctoria * DC. (282) On volcanic rocks. R. tinctoria together with R. fuciformis. E; Canary Islands; La Gomera-NW; hiking path between Vallehermoso (Botanical Garden) and Ermita Santa Clara. |
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Roccella tinctoria DC. (285) On volcanic rocks. Cortex C-; subcortex C+ red; soralia C+ red. E; Canary Islands; La Gomera-MW; nnw of Arure: hiking path to Alojera. |
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Roccella tinctoria * DC. (320) On a house wall, made of volcanic rocks. Thallus consisting of terete, foveate or smooth branches; no soralia; apothecia in statu nascendi, disc pruinose; holdfast brownish. Thallus K-; cortex C-; subcortex C+ red. E; Canary Islands; La Gomera-NW; se of Vallehermoso: El Tion. |
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Roccella tinctoria DC. (320) On a house wall, made of volcanic rocks. Holdfast brown. E; Canary Islands; La Gomera-NW; se of Vallehermoso: El Tion. |
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Roccella tinctoria DC. (320) On a house wall, made of volcanic rocks. Initial stages of apothecia. E; Canary Islands; La Gomera-NW; se of Vallehermoso: El Tion. |
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Roccella tinctoria DC. (426) Saxicolous, on volcanic rocks. Holdfast dark; cortex C-; soralia C+ red. E; Canary Islands; La Gomera-M; R16 between Casa Olsen and Imada: Lomo de las Cardos. |
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Roccella tinctoria DC. (426) Saxicolous, on volcanic rocks. E; Canary Islands; La Gomera-M; R16 between Casa Olsen and Imada: Lomo de las Cardos. |
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Roccella tinctoria DC. (426) Saxicolous, on volcanic rocks. With an apothecium; soralia small.. E; Canary Islands; La Gomera-M; R16 between Casa Olsen and Imada: Lomo de las Cardos. |
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Rufoplaca arenaria Arup, Söchting & Fröden (417) (syn. Caloplaca arenaria/subpallida). Saxicolous, on volcanic rocks. Thallus inconspicuous; owergrowing other crustose lichens; apothecia up to 0,7 mm diam., rounded to flexuose, disc flat, dark (red)orange; margin prominent, persistent, sometimes minutely crenulate, slightly paler than disc; asci 8-spored; ascospores colourless, polarilocular (10.5-14 x 7-8.8 µm); photobiont chlorococcoid. Thallus K-, apothecia: K+ purple. Characterized by the orange-red disc, with a persistent margin and a thin, inconspicuous thallus. E; Canary Islands; La Gomera-M; R16 between Casa Olsen and Imada: Lomo de las Cardos. |
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Rufoplaca arenaria Arup, Söchting & Fröden (417) (syn. Caloplaca arenaria/subpallida). Saxicolous, on volcanic rocks. E; Canary Islands; La Gomera-M; R16 between Casa Olsen and Imada: Lomo de las Cardos. |
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Rufoplaca arenaria Arup, Söchting & Fröden (417) (syn. Caloplaca arenaria/subpallida). Saxicolous, on volcanic rocks. E; Canary Islands; La Gomera-M; R16 between Casa Olsen and Imada: Lomo de las Cardos. |
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Rufoplaca arenaria Arup, Söchting & Fröden (417) (syn. Caloplaca arenaria/subpallida). Saxicolous, on volcanic rocks. Microscopic details. E; Canary Islands; La Gomera-M; R16 between Casa Olsen and Imada: Lomo de las Cardos. |
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Rufoplaca arenaria (Pers.) Arup, Söchting & Fröden (434) (syn. Caloplaca arenaria/subpallida). Saxicolous, on volcanic rocks. Thallus inconspicuous, +- immersed in substratum, pale grey; apothecia up to 0.7 mm diam., rounded to flexuose, disc flat, dark orange; proper margin +- elevated, persistent, concolourous; ascospores polarilocular, septum 4-6 µm (13.3- 16.5 x 7.0-7,7µm). Thallus K-, apothecia: K+ purple. E; Canary Islands; La Gomera-NW; nnw of Vallehermoso; n of the Ermita de Coromoto; surroundings of Chijere. |
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Rufoplaca arenaria (Pers.) Arup, Söchting & Fröden (434) Saxicolous, on volcanic rocks. E; Canary Islands; La Gomera-NW; nnw of Vallehermoso; n of the Ermita de Coromoto; surroundings of Chijere. |
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Rufoplaca arenaria (Pers.) Arup, Söchting & Fröden (434) Saxicolous, on volcanic rocks. Microscopic details. E; Canary Islands; La Gomera-NW; nnw of Vallehermoso; n of the Ermita de Coromoto; surroundings of Chijere. |
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Sanguineodiscus aractinus (Fr.) I.V. Frolov & Vondrák (420) (syn. Caloplaca aractina). Saxicolous; on volcanic rocks. Thallus brownish-grey, areolate; apothecia up to 0.7 mm diam.; disc rusty, flat to convex; proper margin inconspicuous, disappearing with age; thalline margin grey, persistent; epithecium brown; hymenium colourless (60 µm); hypothecium colourless; asci 8-spored; ascospores colourless, polarilocular (10.9-13.3 x 7.0-7.7 µm); septum wide. Thallus K-; apothecia K+ red. E; Canary Islands; La Gomera-M; R16 between Casa Olsen and Imada: Lomo de las Cardos. New to La Gomera. |
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Sanguineodiscus aractinus (Fr.) I.V. Frolov & Vondrák (420) (syn. Caloplaca aractina). Saxicolous; on volcanic rocks. E; Canary Islands; La Gomera-M; R16 between Casa Olsen and Imada: Lomo de las Cardos. |
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Sanguineodiscus aractinus (Fr.) I.V. Frolov & Vondrák (420) (syn. Caloplaca aractina). Saxicolous; on volcanic rocks. E; Canary Islands; La Gomera-M; R16 between Casa Olsen and Imada: Lomo de las Cardos. |
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Sanguineodiscus aractinus (Fr.) I.V. Frolov & Vondrák (420) (syn. Caloplaca aractina). Saxicolous; on volcanic rocks. Microscopic details. E; Canary Islands; La Gomera-M; R16 between Casa Olsen and Imada: Lomo de las Cardos. |
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Squamarina cartilaginea * (With.) P. James (273) On volcanic rocks. Thallus squamulose; squamules greenish yellow, thick, overlapping, pruinose (pruina mainly on the margins); lower surface dark; apothecia not very common, 3 mm diam, disc brownish to reddish brown; margin entire, often excluded with age. Medulla Pd+ yellow or Pd-. E; Canary Islands; La Gomera-MS; e of Imada: El Azadoe. |
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Squamarina cartilaginea * (With.) P. James (273) On volcanic rocks. E; Canary Islands; La Gomera-MSW; ese of Chipude: hiking path between Fortaleza and Igualero; se of the little brook. |
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Squamarina lentigera * (Weber) Poelt (18) On calcareous soil. Thallus rosette-forming; squamules whitish to ochre, covered with a white pruina (especially at the thalline margins); margins turned upward; apothecia 1.5-2 mm diam.; thalline exciple entire, thick at first, later almost disappearing; proper exciple inconspicuous. No spot reactions. E; Canary Islands; La Gomera-NW: Village of Epina. |
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Squamarina lentigera (Weber) Poelt (18) On calcareous soil. E; Canary Islands; La Gomera-NW: Village of Epina. |
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Squamarina lentigera (Weber) Poelt (18) On calcareous soil. E; Canary Islands; La Gomera-NW: Village of Epina. |
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Squamarina lentigera (Weber) Poelt (18) On calcareous soil. E; Canary Islands; La Gomera-NW: Village of Epina. |
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Squamulea subsoluta (Nyl.) Arup, Søchting & Frödén (467) (Caloplaca s.; Caloplaca irrubescens). On strongly eroded basaltic rocks. Thallus consisting of small patches, areolate; on a black hypothallus; apothecia up to 0.5 mm diam. (looking like golden stars on a black sky); proper margin concolorous with disc, becoming excluded with age; epithecium orange-brown; hymenium colourless; hypothecium colourless; ascospores polarilocular (11.2-15.8 x 7.0-9.1 µm); septum 1.8-5.3 µm. Thallus and apothecia K+ red. E; Canary Islands; La Gomera-MS; e of Imada: El Azadoe. |
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Squamulea subsoluta (Nyl.) Arup, Søchting & Frödén (467) (Caloplaca s.; Caloplaca irrubescens). On strongly eroded basaltic rocks. E; Canary Islands; La Gomera-MS; e of Imada: El Azadoe. |
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Squamulea subsoluta (Nyl.) Arup, Søchting & Frödén (467) (Caloplaca s.; Caloplaca irrubescens). On strongly eroded basaltic rocks. E; Canary Islands; La Gomera-MS; e of Imada: El Azadoe. |
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Squamulea subsoluta (Nyl.) Arup, Søchting & Frödén (467) (Caloplaca s.; Caloplaca irrubescens). On strongly eroded basaltic rocks. E; Canary Islands; La Gomera-MS; e of Imada: El Azadoe. |
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Squamulea subsoluta (Nyl.) Arup, Søchting & Frödén (467) (Caloplaca s.; Caloplaca irrubescens). On strongly eroded basaltic rocks. Microscopic details. E; Canary Islands; La Gomera-MS; e of Imada: El Azadoe. |
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Squamulea subsoluta (Nyl.) Arup, Søchting & Frödén (519) (Caloplaca s.; Caloplaca irrubescens). Saxicolous; on basaltic rocks. Asci 8-spored; ascospores colourless to brown (12.3-15.8 x 5.3-9.1 µm); septum 0.8-3.6 µm. E; Canary Islands; La Gomera-MSW; ese of Chipude: hiking path between Fortaleza and Igualero; se of the little brook. |
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Squamulea subsoluta (Nyl.) Arup, Søchting & Frödén (519) (Caloplaca s.; Caloplaca irrubescens). Saxicolous; on basaltic rocks. Microscopic details. E; Canary Islands; La Gomera-MSW; ese of Chipude: hiking path between Fortaleza and Igualero; se of the little brook. |
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Stereocaulon azoreum * (Schaer.) Nyl. (339) On volcanic rocks. Thallus erect; pseudopodetia branched; phyllocladia granular to squamulose; neither isidiate nor sorediate; apothecia up to 1 mm diam.. Thallus K+ yellow, Pd+ orange-reddish. E; La Gomera-MN; s of Las Rosas; s of Roque Blanco: near Mirador Dinero. |
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Stereocaulon azoreum (Schaer.) Nyl. (339) On volcanic rocks. E; La Gomera-MN; s of Las Rosas; s of Roque Blanco: near Mirador Dinero. |
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Stereocaulon azoreum (Schaer.) Nyl. (339) On volcanic rocks. E; La Gomera-MN; s of Las Rosas; s of Roque Blanco: near Mirador Dinero. |
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Stereocaulon azoreum (Schaer.) Nyl. (339) On volcanic rocks. E; La Gomera-MN; s of Las Rosas; s of Roque Blanco: near Mirador Dinero. |
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Stereocaulon azoreum (Schaer.) Nyl. (339) On volcanic rocks. E; La Gomera-MN; s of Las Rosas; s of Roque Blanco: near Mirador Dinero. |
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Stereocaulon azoreum (Schaer.) Nyl. (339) On volcanic rocks. Apothecium. E; La Gomera-MN; s of Las Rosas; s of Roque Blanco: near Mirador Dinero. |
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Stereocaulon azoreum (Schaer.) Nyl. (339) On volcanic rocks. Application with K and Pd. E; La Gomera-MN; s of Las Rosas; s of Roque Blanco: near Mirador Dinero. |
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Stereocaulon dactylophyllum Flörke (41) On volcanic rocks. Thallus consisting of +- erect, +- terete pseudopodetia (-3.5 cm tall), solid, without tomentum; covered with numerous cylindrical to coralloid protuberances (phyllocladia), resembling to isidia with dark tips; without apothecia (usually numerous). Thallus K+ yellow (my first application showed reddish-brown colour; C-; KC-; Pd + yellow. E; Canary Islands; La Gomera-M; e of Chipude: Fortaleza (via ferrata). |
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Stereocaulon dactylophyllum Flörke (41) On volcanic rocks. E; Canary Islands; La Gomera-M; e of Chipude: Fortaleza (via ferrata). |
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Stereocaulon dactylophyllum Flörke (41) On volcanic rocks. E; Canary Islands; La Gomera-M; e of Chipude: Fortaleza (via ferrata). |
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Stereocaulon dactylophyllum Flörke (41) On volcanic rocks. Two spot tests with K and with Pd. E; Canary Islands; La Gomera-M; e of Chipude: Fortaleza (via ferrata). |
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Sticta canariensis (Flörke) Delise (259) (morphotype S. dufourii with cyanobacteria). On mossy Ilex canariensis. Lobes incised; margins with blue-green isidia (flattened) and small lobules; lower surface pale brown, with an dense tomentum; cyphellae rounded. Spot reactions negative. E; Canary Islands; La Gomera-NW; n of the Bar Epina: hiking path between the large antenna and Ermita Santa Clara. |
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Sticta canariensis (Flörke) Delise (259) (morphotype S. dufourii with cyanobacteria). E; Canary Islands; La Gomera-NW; n of the Bar Epina: hiking path between the large antenna and Ermita Santa Clara. |
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Sticta canariensis * (Flörke) Delise (362) (morphotype S. dufourii with cyanobacteria). On Laurus novocanariensis. E; La Gomera-MN; s of Las Rosas; s of Roque Blanco: near Mirador Dinero. |
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Sticta canariensis (Flörke) Delise (362) (morphotype S. dufourii with cyanobacteria). On Laurus novocanariensis. E; La Gomera-MN; s of Las Rosas; s of Roque Blanco: near Mirador Dinero. |
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Sticta canariensis (Flörke) Delise (362) (morphotype S. dufourii with cyanobacteria). On Laurus novocanariensis. E; La Gomera-MN; s of Las Rosas; s of Roque Blanco: near Mirador Dinero. |
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Sticta canariensis (Flörke) Delise (393) (morphotype S. dufourii with cyanobacteria). E; Canary Islands; La Gomera-NW; n of the Bar Epina: hiking path between the large antenna and Ermita Santa Clara. |
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Sticta canariensis (Flörke) Delise (393) (morphotype S. dufourii with cyanobacteria). E; Canary Islands; La Gomera-NW; n of the Bar Epina: hiking path between the large antenna and Ermita Santa Clara. |
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Sticta canariensis (Flörke) Delise (393) (morphotype S. dufourii with cyanobacteria). Lower surface. E; Canary Islands; La Gomera-NW; n of the Bar Epina: hiking path between the large antenna and Ermita Santa Clara. |
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Sticta fuliginosa (Hoffm.) Ach. (17) On Laurus novocanariensis. Thallus up to 5 cm diam., ± single-lobed; lobes rounded (to 3 cm wide); upper surface with scattered cylindrical to coralloid isidia; lower side brown, with conspicuous, rounded cyphellae. Spot tests negative. (Very similar is S. sylvatica, but the latter has uneven lobe margins and is more-lobed when mature). E; Canary Islands; La Gomera-NW; n of the Bar Epina: surrounding of the large antenna. |
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Sticta fuliginosa (Hoffm.) Ach. (17) On Laurus novocanariensis. Upper surface with corraloid isidia. E; Canary Islands; La Gomera-NW; n of the Bar Epina: surrounding of the large antenna. |
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Sticta fuliginosa (Hoffm.) Ach. (17) On Laurus novocanariensis. Lower surface with tomentum and cyphellae. E; Canary Islands; La Gomera-NW; n of the Bar Epina: surrounding of the large antenna. |
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Sticta fuliginosa (Hoffm.) Ach. (409) On Laurus novocanariensis. E; Canary Islands; La Gomera-M: Pajarito. |
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Sticta limbata (Sm.) Ach. (403) Corticol, on Erica arborea. Thallus consisting of large lobes (usually few); lobes (up to 1-2 cm wide) with rounded margins; soralia blue-grey, marginal (occasionally also laminal); lower surface pale brown, pubescent, with limited white cyphellae. Spot tests negative. E; Canary Islands; La Gomera-M: Pajarito. |
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Strigula decipiens (Malme) P.M. Mc Carthy (337) On volcanic rocks. Thallus brownish-greenish-grey, forming rounded colonies up to 1.5 cm diam., areolate in the center; prothallus whitish; Perithecia numerous, 1-3 per areole, ca. 1/3 immersed in the thallus, +- black; ostioles apical, inconspicuous; paraphyses simple; asci fissitunicate, 8-spored (?), 70 µm; ascospores colourless, 5-septate, fusiform, often tapering towards the proximal end, (26.6-31.5 x 3.5-4.6 µm). Photobiont: Trentepohlia. E; Canary Islands; La Gomera-NW; se of Vallehermoso: El Tion. |
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Strigula decipiens (Malme) P.M. Mc Carthy (337) On volcanic rocks. E; Canary Islands; La Gomera-NW; se of Vallehermoso: El Tion. |
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Strigula decipiens (Malme) P.M. Mc Carthy (337) On volcanic rocks. Microscopic details. E; Canary Islands; La Gomera-NW; se of Vallehermoso: El Tion. |
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Strigula decipiens (Malme) P.M. Mc Carthy (337) On volcanic rocks. Microscopic details. E; Canary Islands; La Gomera-NW; se of Vallehermoso: El Tion. |
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Teloschistes chrysophthalmus (L.) Th. Fr. (34) On twigs of dead Cistus monspeliensis. Lobes flattened; upper surface yellow to grey-orange, lower surface paler; lobes with spinules; apothecia abundant, short stalked, margins with numerous spinules (resembles a golden eye). Thallus K+ red. E; Canary Islands; La Gomera-M; e of Chipude: n of Fortaleza. |
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Teloschistes chrysophthalmus (L.) Th. Fr. (526) On twigs of dead Cistus monspeliensis. E; Canary Islands; La Gomera-M; e of Chipude: n of Fortaleza. |
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Teloschistes flavicans * (Sw.) Norm. (180405) On volcanic rocks. Thallus fructicose, richely branched; branches (0.5-1 mm) rounded, flattened or angled. Cortex K+ purple. E; Canary Islands; La Gomera-NW; n of the Bar Epina: hiking path between the large antenna and Ermita Santa Clara. |
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Teloschistes flavicans * (Sw.) Norm. (394) On volcanic rocks. Thallus fructicose, richely branched; branches (0.5-1 mm) rounded, flattened or angled. Cortex K+ purple. E; Canary Islands; La Gomera-NW; n of the Bar Epina: hiking path between the large antenna and Ermita Santa Clara. |
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Tephromela grumosa (Pers.) Hafellner & Roux (424) Saxicolous; on volcanic rocks. Thallus thick, cracked/areolate, areoles (-1.5 mm diam.), covered with granular soredia (blue-grey); apothecia not seen. Thallus/soralia K+ yellow, C-, KC-, Pd-. E; Canary Islands; La Gomera-M; R16 between Casa Olsen and Imada: Lomo de las Cardos. (New to La Gomera). |
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Tephromela grumosa (Pers.) Hafellner & Roux (424) Saxicolous; on volcanic rocks. E; Canary Islands; La Gomera-M; R16 between Casa Olsen and Imada: Lomo de las Cardos. (New to La Gomera). |
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Tephromela grumosa (Pers.) Hafellner & Roux (424) Saxicolous; on volcanic rocks. E; Canary Islands; La Gomera-M; R16 between Casa Olsen and Imada: Lomo de las Cardos. (New to La Gomera). |
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Toninia toepfferi * (Stein) Navás (56) syn. Thalloidioma toepfferi Stein On rock fissures (terrace wall) filled with soil. Tallus squamulose; squamules up to 4 mm diam., bullate; upper surface epruinose, with conspicuous white pseudocyphellae, lacking pores; apothecia up to 3 mm diam., plane and marginate when young, becoming convex and immarginate with age; disc slightly pruinose or epruinose. Epithecium K+ violet, N+ violet. (Together with T. physaroides the only pseudocyphellate species). E; Canary Islands; La Gomera-MW; hiking path between Las Hayas and El Cercado. Image width: 29 mm. |
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Toninia toepfferi * (Stein) Navás (56) syn. Thalloidioma toepfferi Stein On rock fissures (terrace wall) filled with soil. E; Canary Islands; La Gomera-MW; hiking path between Las Hayas and El Cercado. |
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Toninia toepfferi (Stein) Navás (56) syn. Thalloidioma toepfferi Stein On rock fissures (terrace wall) filled with soil. E; Canary Islands; La Gomera-MW; hiking path between Las Hayas and El Cercado. |
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Toninia toepfferi (Stein) Navás (303) syn. Thalloidioma toepfferi Stein On mossy rock fissures filled with soil. Tallus squamulose; squamules bullate; upper surface sometimes +-pruinose, with conspicuous white pseudocyphellae (up to 0.4. mm diam.); cortex cellular (see microscopic details); apothecia up to 3 mm diam., plane and marginate when young, becoming convex and immarginate with age; disc slightly pruinose or epruinose. Epithecium grey; hymenium colourless (50-80 µm); hypothecium dark brown; asci 8-spored; paraphyses +- unbranched; ascospores colourless, 1-septate (16.8 - 20.3 x 3.5 - 4.6 µm), +- fusiform, often with one end +- rounded, the other pointed. (Together with T. physaroides the only pseudocyphellate species). E; Canary Islands; La Gomera-MW; nnw of Arure: hiking path to Alojera. |
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Toninia toepfferi (Stein) Navás (303) syn. Thalloidioma toepfferi Stein On mossy rock fissures filled with soil. E; Canary Islands; La Gomera-MW; nnw of Arure: hiking path to Alojera. |
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Toninia toepfferi (Stein) Navás (303) syn. Thalloidioma toepfferi Stein On mossy rock fissures filled with soil. Microscopic details. E; Canary Islands; La Gomera-MW; nnw of Arure: hiking path to Alojera. |
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Toninia toepfferi (Stein) Navás (338) syn. Thalloidioma toepfferi Stein On mossy soil. (Wet specimen). E; Canary Islands; La Gomera-MW; nnw of Arure: hiking path to Alojera. E; Canary Islands; La Gomera-MS; n Playa Santiago; close to Las Toscas: junction to Benchijigua. |
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Toninia toepfferi (Stein) Navás (338) syn. Thalloidioma toepfferi Stein On mossy soil. E; Canary Islands; La Gomera-MS; n Playa Santiago; close to Las Toscas: junction to Benchijigua. |
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Toninia toepfferi (Stein) Navás (338) syn. Thalloidioma toepfferi Stein On mossy soil. E; Canary Islands; La Gomera-MS; n Playa Santiago; close to Las Toscas: junction to Benchijigua. It is my impression tha T. toepfferi is the most common Toninia in La Gomera. (I have seen it many times at different places). |
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Toninia toepfferi * (Stein) Navás (512) syn. Thalloidioma toepfferi Stein Thallus squamulose, black, +- shiny; squamules scattered, up to 4 mm wide, bullat; with white pseudocyphellae (up to 0.3 mm diam; apothecia rare, margin lecideine, constricted at base, up to 4 mm diam; disc weakly pruinose; epithecium dark grey; hymenium colourless, 40-55 µm; paraphyses: the apical cell swollen; hypothecium reddish brown; asci 8-spored; ascospores 1-septate, colourless, fusiform/bacilliform, 14.0-19.3 x 3.5-4.9 µm. Photobiont Nostoc. Spot tests negative. E; Canary Islands; La Gomera-M; e of Chipude: n of Fortaleza. |
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Toninia toepfferi * (Stein) Navás * (512) syn. Thalloidioma toepfferi Stein E; Canary Islands; La Gomera-M; e of Chipude: n of Fortaleza. |
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Toninia toepfferi (Stein) Navás (512) syn. Thalloidioma toepfferi Stein E; Canary Islands; La Gomera-M; e of Chipude: n of Fortaleza. |
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Toninia toepfferi (Stein) Navás (512) syn. Thalloidioma toepfferi Stein E; Canary Islands; La Gomera-M; e of Chipude: n of Fortaleza. |
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Toninia toepfferi (Stein) Navás (512) syn. Thalloidioma toepfferi Stein E; Canary Islands; La Gomera-M; e of Chipude: n of Fortaleza. |
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Toninia toepfferi (Stein) Navás (512) syn. Thalloidioma toepfferi Stein Microscopic details. E; Canary Islands; La Gomera-M; e of Chipude: n of Fortaleza. |
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Toninia tristis subsp. pseudotabacina Timdal (463a) On base rich soil. Thallus squamulose, chestnut brown to dark brown; . squamules bullate, often with punctiform pores; upper cortex with a parplectenchymatous layer; apothecia constricted a base, margin lecideine; lecideine; epithecium blue-green; hymenium colourless, 45 - 55 µm; paraphyses thickened at apices; hypothecium bright brownish; asci 8-spored, ascospores 1-celled, colourless, ellipsoid, 11.9 -14.7 x 4.6-6.3 µm; photobiont chlorococcoid. Spot tests negative. E; Canary Islands; La Gomera--MS; se of Imada: El Azadoe. |
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Toninia tristis subsp. pseudotabacina Timdal (463a) On base rich soil. E; Canary Islands; La Gomera--MS; se of Imada: El Azadoe. |
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Toninia tristis subsp. pseudotabacina Timdal (463a) On base rich soil. Specimen with an apothecium (1.5 mm diam.). E; Canary Islands; La Gomera--MS; se of Imada: El Azadoe. |
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Toninia tristis subsp. pseudotabacina Timdal (463a) On base rich soil. E; Canary Islands; La Gomera--MS; se of Imada: El Azadoe. |
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Toninia tristis subsp. pseudotabacina Timdal (463a) On base rich soil. Microscopic details. E; Canary Islands; La Gomera--MS; se of Imada: El Azadoe. |
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Tuckermannopsis chlorophylla (Willd.) Hale (404) Corticol; on Erica arborea. Lobes with marginal soralia; lower side pale brownn, shiny; with few, simple rhizines; without tomentum. Photobiont green. E; Canary Islands; La Gomera-M: Pajarito. |
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Tuckermannopsis chlorophylla (Willd.) Hale (404) Corticol; on Erica arborea. E; Canary Islands; La Gomera-M: Pajarito. |
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Tuckermannopsis chlorophylla (Willd.) Hale (404) Corticol; on Erica arborea. Lower surface E; Canary Islands; La Gomera-M: Pajarito. |
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Unknown crustose species (288) On mossy soil between Toninia toepfferi (303). Thallus ecorticate, +- sorediate; apothecia dark grey; up to 0.5 mm diam.; without a margin, convex to semi-globose from beginning; epithecium slightly brown; hymenium colourless (35-40 µm); hypothecium colourless; asci >4-spored; ascospores colourless (but brownish with age), narrow ellipsoid, 1-septate (12.6 - 17.8 x 3.2 - 4.2 µm). Thallus K+ yellow, C-, Pd-. E; Canary Islands; La Gomera-MW; nnw of Arure: hiking path to Alojera. |
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Unknown crustose species (288) On mossy soil between Toninia toepfferi (303). E; Canary Islands; La Gomera-MW; nnw of Arure: hiking path to Alojera. |
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Unknown crustose species (288) On mossy soil between Toninia toepfferi (303). E; Canary Islands; La Gomera-MW; nnw of Arure: hiking path to Alojera. |
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Unknown crustose species (288) On mossy soil between Toninia toepfferi (303). E; Canary Islands; La Gomera-MW; nnw of Arure: hiking path to Alojera. |
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Unknown crustose species (288) On mossy soil between Toninia toepfferi (303). E; Canary Islands; La Gomera-MW; nnw of Arure: hiking path to Alojera. |
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Unknown crustose species (288) On mossy soil between Toninia toepfferi (303). Application with K. E; Canary Islands; La Gomera-MW; nnw of Arure: hiking path to Alojera. |
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Unknown crustose species (288) On mossy soil between Toninia toepfferi (303). Microscopic details. E; Canary Islands; La Gomera-MW; nnw of Arure: hiking path to Alojera. |
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Unknown crustose species (335) On volcanic rocks. Thallus areolate; prothallus black; apothecia black (up to 2.3 mm diam.), constricted at base; often clustered; margin lecideine, prominent, persistent, irregularly bent; disc black, pruinose; epithecium olive; hymenium colourless (88 µm); paraphyses anastomosing; hypothecium colourless; asci 8-spored (81 µm); ascospores colourless (with perispor?), simple (10.5-21.0 x 6.3-9.5 µm). Thallus K+ yellow, C-, KC+ orange; Pd-; margin and upper part of hymenium POL+. E; Canary Islands; La Gomera-NW; se of Vallehermoso: El Tion. |
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Unknown crustose species (335) On volcanic rocks. E; Canary Islands; La Gomera-NW; se of Vallehermoso: El Tion. |
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Unknown crustose species (335) On volcanic rocks. E; Canary Islands; La Gomera-NW; se of Vallehermoso: El Tion. |
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Unknown crustose species (335) On volcanic rocks. Microscopic details. E; Canary Islands; La Gomera-NW; se of Vallehermoso: El Tion. |
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Unknown crustose species (350) On volcanic rocks. Thallus areolate; apothecia black (up to 2.5 mm diam.), +- immersed; often clustered; margin lecideine, prominent, persistent; disc black, pruinose, flat to convex, uneven; epithecium olive-brown; hymenium colourless (100-130 µm); paraphyses anastomosing; hypothecium colourless; asci 8-spored (81 µm); ascospores colourless (with perispor), simple (17.5-21.0 x 7.0-9.8 µm). Thallus K+- yellowish, C-, KC-, Pd-. E; La Gomera-MN; s of Las Rosas; s of Roque Blanco: near Mirador Dinero. |
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Unknown crustose species (350) On volcanic rocks. E; La Gomera-MN; s of Las Rosas; s of Roque Blanco: near Mirador Dinero. |
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Unknown crustose species (350) On volcanic rocks. Microscopic details. E; La Gomera-MN; s of Las Rosas; s of Roque Blanco: near Mirador Dinero. |
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Unknown crustose species (372) On bark of Castanea sativa. Thallus thin, uneven; apothecia black, up to 1.2 mm diam.; Photobiont Trentepohlia (?), (7.7-10.9 x 9.8 µm); margin lecideine, irregular, persistent; disc black, flat to slightly convex; epithecium olive, hymenium colourless (55 µm), with oil droplets (?); hypothecium grey; asci 8-spored; paraphyses +- parallel; ascospores simple, colourless (14.0-15.8 x 7.0-8.4 µm). Thallus K-, C-, KC+- yellowish, Pd-. E; La Gomera-MN; s of Las Rosas; s of Roque Blanco: near Mirador Dinero. |
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Unknown crustose species (372) On bark of Castanea sativa. E; La Gomera-MN; s of Las Rosas; s of Roque Blanco: near Mirador Dinero. |
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Unknown crustose species (372) On bark of Castanea sativa. E; La Gomera-MN; s of Las Rosas; s of Roque Blanco: near Mirador Dinero. |
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Unknown crustose species (372) On bark of Castanea sativa. Microscopic details. E; La Gomera-MN; s of Las Rosas; s of Roque Blanco: near Mirador Dinero. |
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Unknown crustose species (372) On bark of Castanea sativa. Microscopic details. E; La Gomera-MN; s of Las Rosas; s of Roque Blanco: near Mirador Dinero. |
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Unknown squamulose species (425) Saxicolous, on volcanic rocks. Thallus squamulose; squamules up to 1 mm diam., attached to the substratum or ascending; flat when young, later convex; lower side black; photobiont green. Thallus K+ yellow, C-, KC-, Pd-. E; Canary Islands; La Gomera-M; R16 between Casa Olsen and Imada: Lomo de las Cardos. |
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Unknown squamulose species (425) Saxicolous, on volcanic rocks. E; Canary Islands; La Gomera-M; R16 between Casa Olsen and Imada: Lomo de las Cardos. |
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Unknown squamulose species (425) Saxicolous, on volcanic rocks. E; Canary Islands; La Gomera-M; R16 between Casa Olsen and Imada: Lomo de las Cardos. |
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Usnochroma scoriophilum * (A. Massal.) Søchting, Arup & Frödén (Caloplaca scoriophila) (180411) On volcanic rocks. Thallus yellow-green, effigurated; areoles and "lobes" convex (difference to U. carphinea); apothecial disc orange-red, flat when young, later convex; margin lecanorine (concolorous with thallus); spores ellipsoid, polarilocular. Thallus KC+ (faintly red); apothecial disc K+ red. E; Canary Islands; La Gomera-SW; ssw of Chipude: close to Ermita N.S. de Guadalupe. |
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Usnochroma scoriophilum (A. Massal.) Søchting, Arup & Frödén (Caloplaca scoriophila) (464) On volcanic rocks. E; Canary Islands; La Gomera-MS; se of Imada: El Azadoe |
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Usnochroma scoriophilum (A. Massal.) Søchting, Arup & Frödén (Caloplaca scoriophila) (545) On volcanic rocks. E; Canary Islands; La Gomera-W; sw of Arure: hiking path down to Taguluche. |
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Varicellaria hemisphaerica (Flörke) Schmitt & Lumbsch (406) Corticolous; on twigs of Erica arborea (shady). Thallus grey, thick, warted; prothallus white to silver; soralia concolorous or paler (up to 1.5 mm), strongly convex; soredia granular. Thallus/soralia K-, C+ carmine-red, KC+ red, Pd-; UV glaucous. The species resembles Ochrolechia arborea, but the latter has a thin thallus, concave soralia and is UV+ orange. E; Canary Islands; La Gomera-M: Pajarito. (New to La Gomera). |
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Variospora dolomiticola (Huds.) Arup, Søchting, & Frödén (305) Saxicolous; on volcanic rocks. Thallus consisting of small patches, areolate, pruinose; apothecia up to 0.4 mm diam.; proper margin concolorous with disc, becoming excluded with age; epithecium orange-brown; hymenium colourless (42-53 µm); hypothecium colourless; ascospores polarilocular (11.6-14.7 x 6.3-8.4 µm); septum 3.5-5.0 µm. Thallus and apothecia K+ red. E; Canary Islands; La Gomera-MW; nnw of Arure: hiking path to Alojera. |
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Variospora dolomiticola (Huds.) Arup, Søchting, & Frödén (305) Saxicolous; on volcanic rocks. E; Canary Islands; La Gomera-MW; nnw of Arure: hiking path to Alojera. |
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Variospora dolomiticola (Huds.) Arup, Søchting, & Frödén (305) Saxicolous; on volcanic rocks. Microscopic details E; Canary Islands; La Gomera-MW; nnw of Arure: hiking path to Alojera. |
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Variospora dolomiticola (Huds.) Arup, Søchting, & Frödén (487) Saxicolous; on eroded basaltic rocks. Thallus orange; disc deep orange; proper margin concolorous (disappearing with age); epithecium brown-orange; hymenium colourless (55 µm); hypothecium colourless; asci 8-spored; ascospores colourless, 1-septate (polarilocular), 11.9-13.7 x 6.3-8.8 µm; septum 1.8-4.9 µm. Thallus and apothecia K+ red. E; Canary Islands; La Gomera-NNW; se of Vallehermoso; nw of El Tion; near Garabato. |
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Variospora dolomiticola (Huds.) Arup, Søchting, & Frödén (487) Saxicolous; on eroded basaltic rocks. E; Canary Islands; La Gomera-NNW; se of Vallehermoso; nw of El Tion; near Garabato. |
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Variospora dolomiticola (Huds.) Arup, Søchting, & Frödén (487) Saxicolous; on eroded basaltic rocks. Microscopic details. E; Canary Islands; La Gomera-NNW; se of Vallehermoso; nw of El Tion; near Garabato. |
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Variospora dolomiticola (Huds.) Arup, Søchting, & Frödén (535) Saxicolous; on volcanic rocks (calcareous). Thallus squamulose-areolate; pruinose; apothecia up to 1 mm diam.; margin zeorine; epithecium orange-brown; hymenium colourless; hypothecium colourless; asci 8-spored; ascospores coöourless, polarilocular (10.5-12.3 x 5.6-8.8 µm); septum 1.8-5.3 µm. Thallus K+ red; apothecia K+ red. E; Canary Islands; La Gomera-MW; sw of Arure: hiking path to Taguluche. New to La Gomera. |
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Variospora dolomiticola (Huds.) Arup, Søchting, & Frödén (535) Saxicolous; on volcanic rocks (calcareous). E; Canary Islands; La Gomera-MW; sw of Arure: hiking path to Taguluche. |
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Variospora dolomiticola (Huds.) Arup, Søchting, & Frödén (542) Saxicolous; on volcanic rocks (calcareous). E; Canary Islands; La Gomera-MW; sw of Arure: hiking path to Taguluche. |
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Variospora dolomiticola (Huds.) Arup, Søchting, & Frödén (542) Saxicolous; on volcanic rocks (calcareous). E; Canary Islands; La Gomera-MW; sw of Arure: hiking path to Taguluche. |
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Variospora dolomiticola (Huds.) Arup, Søchting, & Frödén (535) Saxicolous; on volcanic rocks (calcareous). Microscopic details. E; Canary Islands; La Gomera-MW; sw of Arure: hiking path to Taguluche. |
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Variospora fuerteventurae * van den Boom & Etayo (264) On a nw-exposed terrace wall of volcanic rocks (calcareous?). Thallus placodioid; lobes closely adpressed and flat to convex, rounded, slightly palmate, partly pruinose; apothecia up to 1 mm diam.; epithecium orange-brown; hymenium colourless (-70 µm); paraphyses +- simple; hypothecium colourless; asci 8-spored (63 µm); ascospores colourless, polarilocular, some ellipsoid, others lemon-shaped to rhomboid in parts (13.7-14.7 x 7.0-7.4 µm); septum 4-5 µm. Th. and apothecia K+ red. E; Canary Islands; La Gomera-MW: n of Arure. |
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Variospora fuerteventurae * van den Boom & Etayo (264) On a nw-exposed terrace wall of volcanic rocks (calcareous?). E; Canary Islands; La Gomera-MW: n of Arure. |
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Variospora fuerteventurae van den Boom & Etayo (264) On a nw-exposed terrace wall of volcanic rocks (calcareous?). E; Canary Islands; La Gomera-MW: n of Arure. |
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Variospora fuerteventurae van den Boom & Etayo (264) On a nw-exposed terrace wall of volcanic rocks (calcareous?). E; Canary Islands; La Gomera-MW: n of Arure. |
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Variospora fuerteventurae van den Boom & Etayo (264) On a nw-exposed terrace wall of volcanic rocks (calcareous?). Microscopic details. E; Canary Islands; La Gomera-MW: n of Arure. |
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Variospora fuerteventurae * van den Boom & Etayo (306) On volcanic rocks. Thallus placodioid, but areolate in the center; lobes convex, pruinose; apothecia up to 1.3 mm diam.; +- confined to the center; disc flat, later convex; margin paler than disc, later disapperaring; epithecium orange-brown; hymenium colourless (70 µm), with oil droplets (?); paraphyses +- simple; hypothecium colourless; asci 8-spored; ascospores 1-septate; lemon-shaped (13.3 - 15.4 x 6.6 - 9.8 µm); septum > 3 µm; photobiont chlorococcoid. Thallus and apothecia K+ red. E; Canary Islands; La Gomera-MW; nnw of Arure: hiking path to Alojera. |
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Variospora fuerteventurae * van den Boom & Etayo (306) On volcanic rocks. E; Canary Islands; La Gomera-MW; nnw of Arure: hiking path to Alojera. |
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Variospora fuerteventurae van den Boom & Etayo (306) On volcanic rocks. E; Canary Islands; La Gomera-MW; nnw of Arure: hiking path to Alojera. |
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Variospora fuerteventurae van den Boom & Etayo (306) On volcanic rocks. E; Canary Islands; La Gomera-MW; nnw of Arure: hiking path to Alojera. |
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Variospora fuerteventurae van den Boom & Etayo (306) On volcanic rocks. Microscopic details. E; Canary Islands; La Gomera-MW; nnw of Arure: hiking path to Alojera. |
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Variospora fuerteventurae van den Boom & Etayo (331) On volcanic rocks. Thallus placodioid; lobes convex, pruinose; apothecia up to 1 mm diam.; +- confined to the center; disc flat; margin paler than disc; epithecium orange; hymenium colourless (60 µm), with oil droplets (?); paraphyses +- simple; hypothecium colourless; asci 8-spored (50 µm); ascospores 1-septate; lemon-shaped (15.8 - 17.9 x 7.0 - 8.1 µm); septum 2.1-2.8 µm; photobiont chlorococcoid. Thallus K+ light purple; apothecia K+ red. E; Canary Islands; La Gomera-NW; se of Vallehermoso: El Tion. |
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Variospora fuerteventurae van den Boom & Etayo (331) On volcanic rocks. E; Canary Islands; La Gomera-NW; se of Vallehermoso: El Tion. |
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Variospora fuerteventurae van den Boom & Etayo (331) On volcanic rocks. Microscopic details. E; Canary Islands; La Gomera-NW; se of Vallehermoso: El Tion. |
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Variospora fuerteventurae van den Boom & Etayo (432) Saxicolous, on volcanic rocks. Thallus placodioid; lobes closely appressed, convex (V. aurantia has flat lobes); lobe-ends +- palmate, faintly pruinose (difference to V. thallincola); upper surface matt; centre areolate; apothecia up to 1.3 mm diam; disc dark orange; margin paler (concolorous with thallus); epithecium brown; hymenium colourless (70 µm); hypothecium colourless; asci 8-spored; ascospores colourless, polarilocular, lemon-shaped, 1-septate, 9.1-14 x 6.3-9.1 µm; photobiont trebouxioide. Thallus and apothecia K+ red. E; Canary Islands; La Gomera-NW; nnw of Vallehermoso; n of the Ermita de Coromoto; surroundings of Chijere. |
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Variospora fuerteventurae van den Boom & Etayo (432) Saxicolous, on volcanic rocks. E; Canary Islands; La Gomera-NW; nnw of Vallehermoso; n of the Ermita de Coromoto; surroundings of Chijere |
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Variospora fuerteventurae van den Boom & Etayo (432) Saxicolous, on volcanic rocks. E; Canary Islands; La Gomera-NW; nnw of Vallehermoso; n of the Ermita de Coromoto; surroundings of Chijere |
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Variospora fuerteventurae van den Boom & Etayo (432) Saxicolous, on volcanic rocks. Microscopic details. E; Canary Islands; La Gomera-NW; nnw of Vallehermoso; n of the Ermita de Coromoto; surroundings of Chijere |
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Variospora fuerteventurae van den Boom & Etayo (432) Saxicolous, on volcanic rocks. Thallus placodioid-areolate; lobes closely appressed, convex (V. aurantia has flat lobes), apruinose; upper surface matt; centre areolate; apothecia up to 1.3 mm diam; disc dark orange; margin paler (concolorous with thallus); epithecium brown; hymenium colourless (100 µm); hypothecium colourless; asci 8-spored; ascospores colourless, polarilocular, lemon-shaped, 1-septate, 14.0-14.7 x 6.3-8.8 µm; septum 0.7-3.0 µm ;photobiont trebouxioide. Thallus and apothecia K+ red. E; Canary Islands; La Gomera-NW; nnw of Vallehermoso; n of the Ermita de Coromoto; surroundings of Chijere. |
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Variospora fuerteventurae van den Boom & Etayo (432) Saxicolous, on volcanic rocks. Microscopic details. E; Canary Islands; La Gomera-NW; nnw of Vallehermoso; n of the Ermita de Coromoto; surroundings of Chijere |
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Variospora fuerteventurae van den Boom & Etayo (465) Saxicolous; on volcanic rocks. Thallus placodioid, but areolate in the center; lobes convex; apothecia up to 1 mm diam.; +- confined to the center; disc flat, later convex; margin paler than disc, later disapperaring; epithecium orange-brown; hymenium colourless; hypothecium colourless; asci 8-spored; ascospores 1-septate; lemon-shaped (13.3 -15.8 x 3.9 - 7.0 µm); septum 0.8-1.2 µm; photobiont chlorococcoid. Thallus and apothecia K+ red. E; Canary Islands; La Gomera-MS; se of Imada: El Azadoe. |
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Variospora fuerteventurae van den Boom & Etayo (465) Saxicolous; on volcanic rocks. E; Canary Islands; La Gomera-MS; se of Imada: El Azadoe. |
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Variospora fuerteventurae van den Boom & Etayo (465) Saxicolous; on volcanic rocks. Microscopic details. E; Canary Islands; La Gomera-MS; se of Imada: El Azadoe. |
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Xalocoa ocellata (Vill.) Kraichak, Lücking & Lumbsch (21). (syn. Diploschistes ocellatus var. almeriensis . On weathered volcanic rocks. Thallus pale grey-brown (but looking grey-whitish because of a thick epinekral layer), consisting auf subglobose verrucae; 1-3 pycnidia arising on the tips of verrucae; ostioles black, surrounded by a yellowish area; conidia bacilliform, up to 6 µm long; apothecia usually existing (but missing here); photobiont chlorococcoid. Thallus K+ red, with crystal needles; C-, Pd+ orange. E; Canary Islands; La Gomera-MS; nnw of Santiago; hiking path between Guarimiar and Targa. |
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Xalocoa ocellata (Vill.) Kraichak, Lücking & Lumbsch (21). On weathered volcanic rocks. E; Canary Islands; La Gomera-MS; nnw of Santiago; hiking path between Guarimiar and Targa. |
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Xalocoa ocellata (Vill.) Kraichak, Lücking & Lumbsch (21). On weathered volcanic rocks. E; Canary Islands; La Gomera-MS; nnw of Santiago; hiking path between Guarimiar and Targa. |
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Xalocoa ocellata (Vill.) Kraichak, Lücking & Lumbsch (21). On weathered volcanic rocks. Application with K and Pd. E; Canary Islands; La Gomera-MS; nnw of Santiago; hiking path between Guarimiar and Targa. |
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Xalocoa ocellata (Vill.) Kraichak, Lücking & Lumbsch (21). On weathered volcanic rocks. Microscopic details. E; Canary Islands; La Gomera-MS; nnw of Santiago; hiking path between Guarimiar and Targa. |
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Xanthocarpia crenulatella (Nyl.) Frödén, Arup & Søchting (277) (Calolplaca c.) On nutrient-enriched volcanic rocks. Thallus yellowish, crustose-areolate; apothecia (- 0.5 mm diam.); disc orange,+- flat; proper margin surrounded by a thalline rim; paraphyses unbranched, with 2 swollen tip cells; epithecium orange-brown; hymenium colourless (56 µm); hypothecium colourless; ascospores polarilocular (11.2 - 14.7 x 7.0 - 8.8 µm); septum 2.8-3.5 µm. All parts K+ red. E; Canary Islands; La Gomera-MSW; ese of Chipude: hiking path between Fortaleza and Igualero; se of the little brook. |
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Xanthoc. crenulatella (Nyl.) Frödén, Arup & Søchting (277) On nutrient-enriched volcanic rocks. E; Canary Islands; La Gomera-MSW; ese of Chipude: hiking path between Fortaleza and Igualero; se of the little brook. |
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Xanthoc. crenulatella (Nyl.) Frödén, Arup & Søchting (277) On nutrient-enriched volcanic rocks. E; Canary Islands; La Gomera-MSW; ese of Chipude: hiking path between Fortaleza and Igualero; se of the little brook. |
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Xanthoc. crenulatella (Nyl.) Frödén, Arup & Søchting (277) On nutrient-enriched volcanic rocks. Microscopic details. E; Canary Islands; La Gomera-MSW; ese of Chipude: hiking path between Fortaleza and Igualero; se of the little brook. |
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Xanthocarpia spec. (557) Saxicol: on calcareous rocks. Thallus consisting of whitish granules; apothecia scattered, up to 0.3 mm diam.; disc plane, covered with an orange pruina; proper margin concolorous, persistent; epithecium brown-orange; hymenium colourless (60-70 µm), hypothecium colourless; asci 8-spored (50 µm); ascospores, polarilocular, colourless to brown (when old?), 11.2-14.4 x 6.7-9.8 µm; septum narrow; photobiont chlorococcoid. Ap. K+ red. (This all goes well with Xanthocarpia lactea, but the thick, white thallus is contradictory. Presumably it's a new species). E; Canary Islands; La Gomera-MW; sw of Arure: hiking path to Taguluche. New to La Gomera. |
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Xanthocarpia spec. (557) Saxicol: on calcareous rocks. E; Canary Islands; La Gomera-MW; sw of Arure: hiking path to Taguluche. New to La Gomera. |
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Xanthocarpia spec. (557) Saxicol: on calcareous rocks. Microscopic details. E; Canary Islands; La Gomera-MW; sw of Arure: hiking path to Taguluche. New to La Gomera. |
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Xanthoparmelia conspersa (Ach.) Hale (326) On volcanic rocks. Thallus up to 10 cm diam., rosette-forming, closely adpressed to the substratum; lobes up to 2 cm wide; upper surface with cylindrical and simple to coralloid isidia (the isidia of the very similar X. tinctina are globose); apothecia up to 0.8 cm diam.; disc concave; thalline margin smooth, bent over the disc. (The very similar X. stenophylla is not isidiate). E; Canary Islands; La Gomera-NW; se of Vallehermoso: El Tion. |
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Xanthoparmelia conspersa (Ach.) Hale (326) On volcanic rocks. E; Canary Islands; La Gomera-NW; se of Vallehermoso: El Tion. |
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Xanthoparmelia conspersa (Ach.) Hale (326) On volcanic rocks. E; Canary Islands; La Gomera-NW; se of Vallehermoso: El Tion. |
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Xanthoparmelia conspersa (Ach.) Hale (326) On volcanic rocks. Isidia cylindrical to coralloid. E; Canary Islands; La Gomera-NW; se of Vallehermoso: El Tion. |
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Xanthoparmelia loxodes * (Nyl.) (267) On volcanic rocks. Lobes shiny, smooth to wrinkled transversally near the center, with coars, cauliflower-like warts (isidia) on the upper surface; isidia hollow, up to 0.4 mm diam.; lower side black (brown at the margin), with black and simple rhizines; isidia soralia absent. X. verruculifera is similar but isidia solid and smaller. Medulla: K-, C-, KC+- yellow-orange (X. verruculifera KC+ pink). E; Canary Islands; La Gomera-MSW; ese of Chipude: hiking path between Fortaleza and Igualero; se of the little brook. |
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Xanthoparmelia loxodes (Nyl.) (267) On volcanic rocks. E; Canary Islands; La Gomera-MSW; ese of Chipude: hiking path between Fortaleza and Igualero; se of the little brook. |
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Xanthoparmelia loxodes (Nyl.) (267) On volcanic rocks. E; Canary Islands; La Gomera-MSW; ese of Chipude: hiking path between Fortaleza and Igualero; se of the little brook. |
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Xanthoparmelia loxodes (Nyl.) (267) On volcanic rocks. E; Canary Islands; La Gomera-MSW; ese of Chipude: hiking path between Fortaleza and Igualero; se of the little brook. |
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Xanthoparmelia loxodes (Nyl.) (267) On volcanic rocks. E; Canary Islands; La Gomera-MSW; ese of Chipude: hiking path between Fortaleza and Igualero; se of the little brook. |
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Xanthoparmelia loxodes * (Nyl.) (378) On volcanic rocks. E; Canary Islands; La Gomera-NW; n of the Bar Epina: n of the large antenna (footpath to Ermita St. Clara). |
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Xanthoparmelia loxodes (Nyl.) (378) On volcanic rocks. E; Canary Islands; La Gomera-NW; n of the Bar Epina: n of the large antenna (footpath to Ermita St. Clara). |
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Xanthoparmelia loxodes (Nyl.) (378) On volcanic rocks. E; Canary Islands; La Gomera-NW; n of the Bar Epina: n of the large antenna (footpath to Ermita St. Clara). |
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Xanthoparmelia pulla (Ach.) Blanco et al. (190319) On warm, well-lit silicatic rocks. Lobes shiny, smooth to wrinkled transversally near the center; lower side black (brown at the margin), with black rhizines; isidia and soralia absent; apothecia usually present, disc concave to flat, margin smooth. P. verruculifera is similar but isidia present and apothecia absent. E; Canary Islands; La Gomera-MSW; ese of Chipude: hiking path between Fortaleza and Igualero; se of the little brook. |
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Xanthoparmelia stenophylla * (Ach.) Ahti & Hawksw. (268) On warm, well-lit silicatic rocks. Thallus yellow-green to yellow-grey; lobes up to 3 mm wide, +- shiny; no isidia (difference to the similar X. conspersa); no soralia; lower side brown; apothecia - 1.5 mm diam; disc brown; margin thin; often with black pycnidia (see lower photos). Medulla K+ orange --> red, C-, Pd+ orange. E; Canary Islands; La Gomera-MSW; ese of Chipude: hiking path between Fortaleza and Igualero; se of the little brook. |
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Xanthoparmelia stenophylla * (Ach.) Ahti & Hawksw. (268) On warm, well-lit silicatic rocks. E; Canary Islands; La Gomera-MSW; ese of Chipude: hiking path between Fortaleza and Igualero; se of the little brook. |
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Xanthoparmelia stenophylla (Ach.) Ahti & Hawksw. (268) On warm, well-lit silicatic rocks. E; Canary Islands; La Gomera-MSW; ese of Chipude: hiking path between Fortaleza and Igualero; se of the little brook. |
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Xanthoparmelia stenophylla (Ach.) Ahti & Hawksw. (268) On warm, well-lit silicatic rocks. E; Canary Islands; La Gomera-MSW; ese of Chipude: hiking path between Fortaleza and Igualero; se of the little brook. |
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Xanthoparmelia stenophylla * (Ach.) Ahti & Hawksw. (379) On volcanic rocks. E; Canary Islands; La Gomera-NW; n of the Bar Epina: n of the large antenna (footpath to Ermita St. Clara). |
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Xanthoparmelia stenophylla (Ach.) Ahti & Hawksw. (379) On volcanic rocks. E; Canary Islands; La Gomera-NW; n of the Bar Epina: n of the large antenna (footpath to Ermita St. Clara). |
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Xanthoparmelia stenophylla (Ach.) Ahti & Hawksw. (379) On volcanic rocks. E; Canary Islands; La Gomera-NW; n of the Bar Epina: n of the large antenna (footpath to Ermita St. Clara). |
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Xanthoparmelia verruculifera (Nyl.) Blanco et al. (296) On volcanic rocks. Lobes deeply incised, shiny (mainly at the tips), lobe ends flat, center wrinkled; whith scattered, coarse isidia (solid and clustered). Medulla KC+ pink. X. loxodes is very similar but has hollow isidia and the medulla is KC- or KC+ orange-red; resembles also to X. pulla but this species has no isidia. E; Canary Islands; La Gomera-MW; nnw of Arure: hiking path to Alojera. |
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Xanthoparmelia verruculifera (Nyl.) Blanco et al. (296) On volcanic rocks. E; Canary Islands; La Gomera-MW; nnw of Arure: hiking path to Alojera. |
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Xanthoparmelia verruculifera (Nyl.) Blanco et al. (296) On volcanic rocks. E; Canary Islands; La Gomera-MW; nnw of Arure: hiking path to Alojera. |
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Xanthoparmelia verruculifera (Nyl.) Blanco et al. (296) On volcanic rocks. E; Canary Islands; La Gomera-MW; nnw of Arure: hiking path to Alojera. |
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Xanthoparmelia verruculifera (Nyl.) Blanco et al. (296) On volcanic rocks. E; Canary Islands; La Gomera-MW; nnw of Arure: hiking path to Alojera. |
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Xanthoparmelia verruculifera (Nyl.) Blanco et al. (327) On volcanic rocks. E; Canary Islands; La Gomera-NW; se of Vallehermoso: El Tion. |
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Xanthoparmelia verruculifera (Nyl.) Blanco et al. (327) On volcanic rocks. E; Canary Islands; La Gomera-NW; se of Vallehermoso: El Tion. |
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Xanthoparmelia verruculifera (Nyl.) Blanco et al. (327) On volcanic rocks. E; Canary Islands; La Gomera-NW; se of Vallehermoso: El Tion. |
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Xanthoparmelia verruculifera (Nyl.) Blanco et al. (483) On volcanic rocks. E; Canary Islands; La Gomera-NW; se of Vallehermoso: El Tion. |
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Xanthoparmelia verruculifera (Nyl.) Blanco et al. (483) On volcanic rocks. E; Canary Islands; La Gomera-NW; se of Vallehermoso: El Tion. |
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Xanthoria aureola * (Ach.) Erichsen (190317) On volcanic rocks. Reminds on Xanthoria parietina but differs by the narrower (up to 2 mm wide), strap-like, often overlapping lobes and the mostly missing apothecia. Cortex K+ red. E; Canary Islands; La Gomera-MSW; ese of Chipude: hiking path between Fortaleza and Igualero; se of the little brook. |
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Xanthoria calcicola * Oxner (24) On volcanic rocks. Like Xanthoria parietina but differs by the existence of knobby, irregularly globose or lobule-like isidia (often obscuring the center of the thallus) and the mostly missing apothecia. Cortex K+ red. E; Canary Islands; La Gomera-MS; e of Imada: El Azadoe. |
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Xanthoria calcicola * Oxner (24) On volcanic rocks. E; Canary Islands; La Gomera-MS; e of Imada: El Azadoe. |
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Xanthoria calcicola Oxner (24) On volcanic rocks. E; Canary Islands; La Gomera-MS; e of Imada: El Azadoe. |
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Xanthoria calcicola Oxner (269) On volcanic rocks. Like X. parietina but the centre of the yellow-dark orange thallus is packed with coarse, granular-shaped outgrowths (isidia); apothecia +- stalked; disc strongly concave to urceolate; thalline margin involute, crenate to squamulose. E; Canary Islands; La Gomera-MSW; ese of Chipude: hiking path between Fortaleza and Igualero; se of the little brook. |
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Xanthoria calcicola Oxner (269) On volcanic rocks. E; Canary Islands; La Gomera-MSW; ese of Chipude: hiking path between Fortaleza and Igualero; se of the little brook. |
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Xanthoria calcicola Oxner (269) On volcanic rocks. E; Canary Islands; La Gomera-MSW; ese of Chipude: hiking path between Fortaleza and Igualero; se of the little brook. |
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Xanthoria calcicola Oxner * (431) Saxicolous, on volcanic rocks. Thallus covered by (few) isidia. E; Canary Islands; La Gomera-NW; nnw of Vallehermoso; n of the Ermita de Coromoto; surroundings of Chijere. |
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Xanthoria calcicola Oxner * (431) Saxicolous, on volcanic rocks. Thallus covered by (few) isidia. E; Canary Islands; La Gomera-NW; nnw of Vallehermoso; n of the Ermita de Coromoto; surroundings of Chijere. |
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Xanthoria calcicola Oxner (431) Saxicolous, on volcanic rocks. Thallus covered by isidia. E; Canary Islands; La Gomera-NW; nnw of Vallehermoso; n of the Ermita de Coromoto; surroundings of Chijere. |
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Xanthoria calcicola Oxner (431) Saxicolous, on volcanic rocks. Thallus covered by isidia. E; Canary Islands; La Gomera-NW; nnw of Vallehermoso; n of the Ermita de Coromoto; surroundings of Chijere. |
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Xanthoria calcicola Oxner (431) Saxicolous, on volcanic rocks. Thallus lacking isidia. Some specimen differ from the original type by the lack of isidia (even though the beginning of minute folioles towards thallus center may be observed; see this photo and the next --> resembles X. aurea). E; Canary Islands; La Gomera-NW; nnw of Vallehermoso; n of the Ermita de Coromoto; surroundings of Chijere. |
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Xanthoria calcicola Oxner (431) Saxicolous, on volcanic rocks. Thallus lacking isidia. E; Canary Islands; La Gomera-NW; nnw of Vallehermoso; n of the Ermita de Coromoto; surroundings of Chijere. |
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Xanthoria resendei * Poelt & Tav. (180406) On basaltic rocks. Thallus cartilaginous, orange with conspicuous yellowish maculae; lobes elongate, markedly convex, not overlapping. E; Canary Islands; La Gomera-NW; n of the Bar Epina: hiking path between the large antenna and Ermita Santa Clara. |
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Xanthoria resendei * Poelt & Tav. (180406) On basaltic rocks. Thallus cartilaginous, orange with conspicuous yellowish maculae; lobes elongate, markedly convex, not overlapping. E; Canary Islands; La Gomera-NW; n of the Bar Epina: hiking path between the large antenna and Ermita Santa Clara. |
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Xanthoria resendei * Poelt & Tav. (220313) On basaltic rocks. Thallus cartilaginous, orange with conspicuous yellowish maculae; lobes elongate, markedly convex, not overlapping. E; Canary Islands; La Gomera-NW; n of the Bar Epina: hiking path between the large antenna and Ermita Santa Clara. (The same specimen ... four years older). |