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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. 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. 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 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. 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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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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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 (305) (Caloplaca s.; Caloplaca irrubescens). On basaltic rocks. Thallus consisting of small patches, areolate; 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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Squamulea subsoluta (Nyl.) Arup, Søchting & Frödén (305) (Caloplaca s.; Caloplaca irrubescens). On basaltic rocks. E; Canary Islands; La Gomera-MW; nnw of Arure: hiking path to Alojera. |
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Squamulea subsoluta (Nyl.) Arup, Søchting & Frödén (305) (Caloplaca s.; Caloplaca irrubescens). On basaltic rocks. Microscopic details. E; Canary Islands; La Gomera-MW; nnw of Arure: hiking path to Alojera. |
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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-brownish. 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 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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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 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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Toninia toepfferi * (Stein) Navás (56) 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) 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) 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) 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) 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) 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) 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) 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) 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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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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Usnochroma scoriophila * (A. Massal.) Søchting, Arup & Frödén (Caloplaca scoriophila) (180411) On volcanic rocks. Thallus yellow-green, effigurated; 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: Ermita N.S. de Guadalupe. |
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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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Xalocoa ocellata (Vill.) Kraichak, Lücking & Lumbsch (21). (syn. Diploschistes ocellatus var. almeriensis Llimona). 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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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 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 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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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 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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