Lichens of Gomera M-Q (Flechten Gomeras)
Flechtenbilder (N)
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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). |
Flechtenbilder (O)
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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. |
Flechtenbilder (P)
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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 flavicans Lamy (560) On volcanic rocks. E; Canary Islands; La Gomera-M; e of Chipude; hiking path between Fortaleza and Igualero. |
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Pertusaria flavicans Lamy (560) On volcanic rocks. E; Canary Islands; La Gomera-M; e of Chipude; hiking path between Fortaleza and Igualero. |
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Pertusaria flavicans Lamy (560) On volcanic rocks. E; Canary Islands; La Gomera-M; e of Chipude; hiking path between Fortaleza and Igualero. |
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Pertusaria flavicans Lamy (560) On volcanic rocks. Application with K, C, Pd. E; Canary Islands; La Gomera-M; e of Chipude; hiking path between Fortaleza and Igualero. |
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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. |