Lichens of Gomera V-Z (Flechten Gomeras)

	Varicellaria hemisphaerica (Flörke) Schmitt & Lumbsch (406) Corticolous; on twigs of Erica arborea (shady). Thallus grey, thick, warted; prothallus white to silver; soralia concolorous or paler (up to 1.5 mm), strongly convex; soredia granular. Thallus/soralia K-, C+ carmine-red, KC+ red, Pd-; UV glaucous. The species resembles Ochrolechia arborea, but the latter has a thin thallus, concave soralia and is UV+ orange. E; Canary Islands; La Gomera-M: Pajarito. (New to La Gomera).
	Variospora dolomiticola (Huds.) Arup, Søchting, & Frödén (305) Saxicolous; on volcanic rocks. Thallus consisting of small patches, areolate, pruinose; apothecia up to 0.4 mm diam.; proper margin concolorous with disc, becoming excluded with age; epithecium orange-brown; hymenium colourless (42-53 µm); hypothecium colourless; ascospores polarilocular (11.6-14.7 x 6.3-8.4 µm); septum 3.5-5.0 µm. Thallus and apothecia K+ red. E; Canary Islands; La Gomera-MW; nnw of Arure: hiking path to Alojera.
	Variospora dolomiticola (Huds.) Arup, Søchting, & Frödén (305) Saxicolous; on volcanic rocks. E; Canary Islands; La Gomera-MW; nnw of Arure: hiking path to Alojera.
	Variospora dolomiticola (Huds.) Arup, Søchting, & Frödén (305) Saxicolous; on volcanic rocks. Microscopic details E; Canary Islands; La Gomera-MW; nnw of Arure: hiking path to Alojera.
	Variospora dolomiticola (Huds.) Arup, Søchting, & Frödén (487) Saxicolous; on eroded basaltic rocks. Thallus orange; disc deep orange; proper margin concolorous (disappearing with age); epithecium brown-orange; hymenium colourless (55 µm); hypothecium colourless; asci 8-spored; ascospores colourless, 1-septate (polarilocular), 11.9-13.7 x 6.3-8.8 µm; septum 1.8-4.9 µm. Thallus and apothecia K+ red. E; Canary Islands; La Gomera-NNW; se of Vallehermoso; nw of El Tion; near Garabato.
	Variospora dolomiticola (Huds.) Arup, Søchting, & Frödén (487) Saxicolous; on eroded basaltic rocks. E; Canary Islands; La Gomera-NNW; se of Vallehermoso; nw of El Tion; near Garabato.
	Variospora dolomiticola (Huds.) Arup, Søchting, & Frödén (487) Saxicolous; on eroded basaltic rocks. Microscopic details. E; Canary Islands; La Gomera-NNW; se of Vallehermoso; nw of El Tion; near Garabato.
	Variospora dolomiticola (Huds.) Arup, Søchting, & Frödén (535) Saxicolous; on volcanic rocks (calcareous). Thallus squamulose-areolate; pruinose; apothecia up to 1 mm diam.; margin zeorine; epithecium orange-brown; hymenium colourless; hypothecium colourless; asci 8-spored; ascospores coöourless, polarilocular (10.5-12.3 x 5.6-8.8 µm); septum 1.8-5.3 µm. Thallus K+ red; apothecia K+ red. E; Canary Islands; La Gomera-MW; sw of Arure: hiking path to Taguluche. New to La Gomera.
	Variospora dolomiticola (Huds.) Arup, Søchting, & Frödén (535) Saxicolous; on volcanic rocks (calcareous). E; Canary Islands; La Gomera-MW; sw of Arure: hiking path to Taguluche.
	Variospora dolomiticola (Huds.) Arup, Søchting, & Frödén (542) Saxicolous; on volcanic rocks (calcareous). E; Canary Islands; La Gomera-MW; sw of Arure: hiking path to Taguluche.
	Variospora dolomiticola (Huds.) Arup, Søchting, & Frödén (542) Saxicolous; on volcanic rocks (calcareous). E; Canary Islands; La Gomera-MW; sw of Arure: hiking path to Taguluche.
	Variospora dolomiticola (Huds.) Arup, Søchting, & Frödén (535) Saxicolous; on volcanic rocks (calcareous). Microscopic details. E; Canary Islands; La Gomera-MW; sw of Arure: hiking path to Taguluche.
	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.
	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.
	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.
	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.
	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.
	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.
	Variospora fuerteventurae * van den Boom & Etayo (306) On volcanic rocks. E; Canary Islands; La Gomera-MW; nnw of Arure: hiking path to Alojera.
	Variospora fuerteventurae van den Boom & Etayo (306) On volcanic rocks. E; Canary Islands; La Gomera-MW; nnw of Arure: hiking path to Alojera.
	Variospora fuerteventurae van den Boom & Etayo (306) On volcanic rocks. E; Canary Islands; La Gomera-MW; nnw of Arure: hiking path to Alojera.
	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.
	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.
	Variospora fuerteventurae van den Boom & Etayo (331) On volcanic rocks. E; Canary Islands; La Gomera-NW; se of Vallehermoso: El Tion.
	Variospora fuerteventurae van den Boom & Etayo (331) On volcanic rocks. Microscopic details. E; Canary Islands; La Gomera-NW; se of Vallehermoso: El Tion.
	Variospora fuerteventurae van den Boom & Etayo (432) Saxicolous, on volcanic rocks. Thallus placodioid; lobes closely appressed, convex (V. aurantia has flat lobes); lobe-ends +- palmate, faintly pruinose (difference to V. thallincola); upper surface matt; centre areolate; apothecia up to 1.3 mm diam; disc dark orange; margin paler (concolorous with thallus); epithecium brown; hymenium colourless (70 µm); hypothecium colourless; asci 8-spored; ascospores colourless, polarilocular, lemon-shaped, 1-septate, 9.1-14 x 6.3-9.1 µm; photobiont trebouxioide. Thallus and apothecia K+ red. E; Canary Islands; La Gomera-NW; nnw of Vallehermoso; n of the Ermita de Coromoto; surroundings of Chijere.
	Variospora fuerteventurae van den Boom & Etayo (432) Saxicolous, on volcanic rocks. E; Canary Islands; La Gomera-NW; nnw of Vallehermoso; n of the Ermita de Coromoto; surroundings of Chijere
	Variospora fuerteventurae van den Boom & Etayo (432) Saxicolous, on volcanic rocks. E; Canary Islands; La Gomera-NW; nnw of Vallehermoso; n of the Ermita de Coromoto; surroundings of Chijere
	Variospora fuerteventurae van den Boom & Etayo (432) Saxicolous, on volcanic rocks. Microscopic details. E; Canary Islands; La Gomera-NW; nnw of Vallehermoso; n of the Ermita de Coromoto; surroundings of Chijere
	Variospora fuerteventurae van den Boom & Etayo (432) Saxicolous, on volcanic rocks. Thallus placodioid-areolate; lobes closely appressed, convex (V. aurantia has flat lobes), apruinose; upper surface matt; centre areolate; apothecia up to 1.3 mm diam; disc dark orange; margin paler (concolorous with thallus); epithecium brown; hymenium colourless (100 µm); hypothecium colourless; asci 8-spored; ascospores colourless, polarilocular, lemon-shaped, 1-septate, 14.0-14.7 x 6.3-8.8 µm; septum 0.7-3.0 µm ;photobiont trebouxioide. Thallus and apothecia K+ red. E; Canary Islands; La Gomera-NW; nnw of Vallehermoso; n of the Ermita de Coromoto; surroundings of Chijere.
	Variospora fuerteventurae van den Boom & Etayo (432) Saxicolous, on volcanic rocks. Microscopic details. E; Canary Islands; La Gomera-NW; nnw of Vallehermoso; n of the Ermita de Coromoto; surroundings of Chijere
	Variospora fuerteventurae van den Boom & Etayo (465) Saxicolous; on volcanic rocks. Thallus placodioid, but areolate in the center; lobes convex; apothecia up to 1 mm diam.; +- confined to the center; disc flat, later convex; margin paler than disc, later disapperaring; epithecium orange-brown; hymenium colourless; hypothecium colourless; asci 8-spored; ascospores 1-septate; lemon-shaped (13.3 -15.8 x 3.9 - 7.0 µm); septum 0.8-1.2 µm; photobiont chlorococcoid. Thallus and apothecia K+ red. E; Canary Islands; La Gomera-MS; se of Imada: El Azadoe.
	Variospora fuerteventurae van den Boom & Etayo (465) Saxicolous; on volcanic rocks. E; Canary Islands; La Gomera-MS; se of Imada: El Azadoe.
	Variospora fuerteventurae van den Boom & Etayo (465) Saxicolous; on volcanic rocks. Microscopic details. E; Canary Islands; La Gomera-MS; se of Imada: El Azadoe.

Flechtenbilder (W)

Flechtenbilder (X)

	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.
	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.
	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.
	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.
	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.
	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.
	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.
	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.
	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.
	Xanthocarpia lactea auct. non (Massal.) Massal. (557) Saxicol: on calcareous rocks. Thallus consisting of whitish granules; apothecia scattered, up to 0.3 mm diam.; disc plane, covered with an orange pruina; proper margin concolorous, persistent; epithecium brown-orange; hymenium colourless (60-70 µm), hypothecium colourless; asci 8-spored (50 µm); ascospores, polarilocular, colourless to brown (when old?), 11.2-14.4 x 6.7-9.8 µm; septum narrow; photobiont chlorococcoid. Ap. K+ red. (This all goes well with Xanthocarpia lactea, but the thick, white thallus is contradictory. Presumably it's a new species). E; Canary Islands; La Gomera-MW; sw of Arure: hiking path to Taguluche. New to La Gomera.
	Xanthocarpia lactea auct. non (Massal.) Massal. (557) Saxicol: on calcareous rocks. E; Canary Islands; La Gomera-MW; sw of Arure: hiking path to Taguluche. New to La Gomera.
	Xanthocarpia lactea auct. non (Massal.) Massal. (557) Saxicol: on calcareous rocks. Microscopic details. E; Canary Islands; La Gomera-MW; sw of Arure: hiking path to Taguluche. New to La Gomera.
	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.
	Xanthoparmelia conspersa (Ach.) Hale (326) On volcanic rocks. E; Canary Islands; La Gomera-NW; se of Vallehermoso: El Tion.
	Xanthoparmelia conspersa (Ach.) Hale (326) On volcanic rocks. E; Canary Islands; La Gomera-NW; se of Vallehermoso: El Tion.
	Xanthoparmelia conspersa (Ach.) Hale (326) On volcanic rocks. Isidia cylindrical to coralloid. E; Canary Islands; La Gomera-NW; se of Vallehermoso: El Tion.
	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.
	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.
	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.
	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.
	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.
	Xanthoparmelia loxodes * (Nyl.) (378) On volcanic rocks. E; Canary Islands; La Gomera-NW; n of the Bar Epina: n of the large antenna (footpath to Ermita St. Clara).
	Xanthoparmelia loxodes (Nyl.) (378) On volcanic rocks. E; Canary Islands; La Gomera-NW; n of the Bar Epina: n of the large antenna (footpath to Ermita St. Clara).
	Xanthoparmelia loxodes (Nyl.) (378) On volcanic rocks. E; Canary Islands; La Gomera-NW; n of the Bar Epina: n of the large antenna (footpath to Ermita St. Clara).
	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.
	Xanthoparmelia pulla (Ach.) Blanco et al. (532) Saxicolous, on volcanic 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-W; sw of Arure: hiking path to Taguluche.
	Xanthoparmelia pulla (Ach.) Blanco et al. (532) Saxicolous, on volcanic rocks. Lobes sometimes pruinose E; Canary Islands; La Gomera-W; sw of Arure: hiking path to Taguluche.
	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.
	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.
	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.
	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.
	Xanthoparmelia stenophylla * (Ach.) Ahti & Hawksw. (379) On volcanic rocks. E; Canary Islands; La Gomera-NW; n of the Bar Epina: n of the large antenna (footpath to Ermita St. Clara).
	Xanthoparmelia stenophylla (Ach.) Ahti & Hawksw. (379) On volcanic rocks. E; Canary Islands; La Gomera-NW; n of the Bar Epina: n of the large antenna (footpath to Ermita St. Clara).
	Xanthoparmelia stenophylla (Ach.) Ahti & Hawksw. (379) On volcanic rocks. E; Canary Islands; La Gomera-NW; n of the Bar Epina: n of the large antenna (footpath to Ermita St. Clara).
	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.
	Xanthoparmelia verruculifera (Nyl.) Blanco et al. (296) On volcanic rocks. E; Canary Islands; La Gomera-MW; nnw of Arure: hiking path to Alojera.
	Xanthoparmelia verruculifera (Nyl.) Blanco et al. (296) On volcanic rocks. E; Canary Islands; La Gomera-MW; nnw of Arure: hiking path to Alojera.
	Xanthoparmelia verruculifera (Nyl.) Blanco et al. (296) On volcanic rocks. E; Canary Islands; La Gomera-MW; nnw of Arure: hiking path to Alojera.
	Xanthoparmelia verruculifera (Nyl.) Blanco et al. (296) On volcanic rocks. E; Canary Islands; La Gomera-MW; nnw of Arure: hiking path to Alojera.
	Xanthoparmelia verruculifera (Nyl.) Blanco et al. (327) On volcanic rocks. E; Canary Islands; La Gomera-NW; se of Vallehermoso: El Tion.
	Xanthoparmelia verruculifera (Nyl.) Blanco et al. (327) On volcanic rocks. E; Canary Islands; La Gomera-NW; se of Vallehermoso: El Tion.
	Xanthoparmelia verruculifera (Nyl.) Blanco et al. (327) On volcanic rocks. E; Canary Islands; La Gomera-NW; se of Vallehermoso: El Tion.
	Xanthoparmelia verruculifera (Nyl.) Blanco et al. (483) On volcanic rocks. E; Canary Islands; La Gomera-NW; se of Vallehermoso: El Tion.
	Xanthoparmelia verruculifera (Nyl.) Blanco et al. (483) On volcanic rocks. E; Canary Islands; La Gomera-NW; se of Vallehermoso: El Tion.
	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.
	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.
	Xanthoria calcicola * Oxner (24) On volcanic rocks. E; Canary Islands; La Gomera-MS; e of Imada: El Azadoe.
	Xanthoria calcicola Oxner (24) On volcanic rocks. E; Canary Islands; La Gomera-MS; e of Imada: El Azadoe.
	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.
	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.
	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.
	Xanthoria calcicola Oxner * (431) Saxicolous, on volcanic rocks. Thallus covered by (few) isidia. E; Canary Islands; La Gomera-NW; nnw of Vallehermoso; n of the Ermita de Coromoto; surroundings of Chijere.
	Xanthoria calcicola Oxner * (431) Saxicolous, on volcanic rocks. Thallus covered by (few) isidia. E; Canary Islands; La Gomera-NW; nnw of Vallehermoso; n of the Ermita de Coromoto; surroundings of Chijere.
	Xanthoria calcicola Oxner (431) Saxicolous, on volcanic rocks. Thallus covered by isidia. E; Canary Islands; La Gomera-NW; nnw of Vallehermoso; n of the Ermita de Coromoto; surroundings of Chijere.
	Xanthoria calcicola Oxner (431) Saxicolous, on volcanic rocks. Thallus covered by isidia. E; Canary Islands; La Gomera-NW; nnw of Vallehermoso; n of the Ermita de Coromoto; surroundings of Chijere.
	Xanthoria calcicola Oxner (431) Saxicolous, on volcanic rocks. Thallus lacking isidia. Some specimen differ from the original type by the lack of isidia (even though the beginning of minute folioles towards thallus center may be observed; see this photo and the next --> resembles X. aurea). E; Canary Islands; La Gomera-NW; nnw of Vallehermoso; n of the Ermita de Coromoto; surroundings of Chijere.
	Xanthoria calcicola Oxner (431) Saxicolous, on volcanic rocks. Thallus lacking isidia. E; Canary Islands; La Gomera-NW; nnw of Vallehermoso; n of the Ermita de Coromoto; surroundings of Chijere.
	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.
	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.
	Xanthoria resendei * Poelt & Tav. (220313) On basaltic rocks. Thallus cartilaginous, orange with conspicuous yellowish maculae; lobes elongate, markedly convex, not overlapping. E; Canary Islands; La Gomera-NW; n of the Bar Epina: hiking path between the large antenna and Ermita Santa Clara. (The same specimen ... four years older).