Flechtenbilder (A)

Abrothallus-welwitschii-CE9650 Abrothallus welwitschii Mont. ex Tul.
Parasitic on lobes of different Sticta species.
Apothecia  between the coralloid isidia of the host thallus (Sticta fuliginosa or S. sylvatica), 0.2-0.4 mm diam.; disc plane to convex, black but often covered by a greenish pruina.
Portugal: Madeira.
(Coll/ident: Eichler/Cezanne).
Absconditella-delutula-7463 Absconditella delutula (Nyl.) Coppins & Kilias
Usually on rocks, but in this case on dead wood (Pinus sylvestris).
Thallus inconspicuous; apothecia tiny. spores 2-celled (the spores of A. lignicola are 4-celled).
Central Europe; Germany: Hesse.
(Coll:Wernicke, ident: Eichler/Cezanne).
Absconditella-lignicola-7462 Absconditella lignicola Vezda & Pisut
Lignicol; on a dead trunk of Pinus sylvestris.
Thallus crustose; apothecia whitish, very tiny; spores 4-celled (difference to A. delutula).
Central Europe; Germany: Hesse.
(Coll/ident: Eichler & Cezanne).
Acarospora-badiofuscar-3574 Acarospora badiofusca (Nyl.) Th. Fr.
On rocks (gneiss).
Thallus consisting of small, ±rounded reddish brown areoles; apothecia rounded, sessile (usually one per areole), margin elevated, concolorous with the black disc, entire. Thallus no spot reactions.
Austria: Alps.
Acarosporafuscata-7977 Acarospora fuscata (Schrad.) Th. Fr.
On siliceous rocks (Grauwacke) and Basalt (lower image).
Thallus areolate; areoles uneven, raised at the edges; apothecia up to 1 mm diam., immersed, one to several per areole, disc darker than the thallus (from brown to black).
Thallus K-, C+ red, KC+ red; Pd-.
Central Europe; Germany; Hesse.
Acarosporainterrupta-7600 Acarospora interrupta (Ehrenb.) Vain.
On calcareous rocks.
Thallus consisting of brown squamules with whitish (pruinose) margins.
Iran (Identified by H. Sipman).
Acarosporalavicola-8269 _ Acarospora lavicola J. Steiner
On basaltic rocks in dry and sunny environments.
Thallus with yellow areoles, 1 mm in diameter; apothecia imbedded in the areoles (0.3 mm in diameter); more than 100 spores per ascus (5 x 3 µm), not septated, colourless.
Portugal: Madeira. Spain, Canary Islands: La Gomera.
Acarospora-macrospora-8515 Acarospora macrospora (Hepp) Massal. ex Bagl.
On a roof tile.
Thallus consisting of squamules or areoles; apothecia one or two per areole (0.5-1 mm diam.), immersed; disc plane, darker than thallus. No spot reactions.
Central Europe; Germany: Hesse.
(Collected by M. Hentze).
Acarosporasocialis-01 Acarospora socialis H. Magn.
On siliceous rocks.
Thallus consisting of scatterd or contiguous areoles, sometimes slightly pruinose (see lower image); apothecia immersed in the areoles, discs brownish, occasionally broken up and with thallus-colored, sterile tissues; apothecial margins also thallus-colored. Spot reactions negative.
USA; California: Joshua Tree National Park.
Acarosporasocialis-02 Acarospora socialis H. Magn.
Acarospora spec.
On basaltic rocks.
Thallus consisting of olive-green areoles.
Spain; Canary Islands: La Gomera.
Acarospora spec.
Apothecia one or two per areole; deeply immersed in the areoles; disc dark brown to blackish;  thalline margin covered with a whitish pruina.
Acarospora spec.
Epithecium dark green; covered with coarse granules.
Acarospora spec.
Asci clavate.
Acarospora spec.
Epithecial granules reflecting in polarized light.
Acarospora-sulphurata-7029a Acarospora sulphurata (Arnold) Arnold
On volcanic rocks.
Thallus consisting of yellow areoles (without marginal squamules); medulla whitish; more than one apothecium per areole; apothecial disc ±flat, yellow-brown (darker than apothecial margin); many small spores per ascus. Cortex K-.
Spain; Canary Islands: La Gomera (Tequerguenche). First finding for the Canary Islands.
Acrocordia-gemmata-CE1579 Acrocordia gemmata (Ach.) Massal.
Thallus with black, semiglobose perithecia (0.5-1 mm diam.).
No spot reactions.
Central Europe; Germany: Hesse.
Agonimia-opuntiella-6811a Agonimia opuntiella (Buschardt & Poelt) Vezda Syn. Physcia o.
On calcareous soil, between mosses.
Thallus consisting of very small squamules, covered with "cilia" (resembling to Opuntia).
Central Europe; Germany: Hesse. 150 m above sea level.
(Coll/ident: Eichler/Cezanne).
Alectoria-ochroleuca-01 Alectoria ochroleuca (Hoffm.) Massal.
On alpine meadows.
Thallus ±erect (A. sarmentosa is decumbent), up to 10 cm, yellowish-greenish (A. nigricans is darker); pseudocyphellae present. Cortex KC+ yellow (A. nigricans is KC+ red, A. sarmentosa KC- or KC+ red).
Iceland. Austria: Alps.
Alectoria-ochroleuca-812 Alectoria ochroleuca (Hoffm.) Massal.
Alectoria-sarmentosa-312 Alectoria sarmentosa (Ach.) Ach.
On twigs of Erica arborea.
Thallus decumbent, yellow to black Pseudocyphellae fusiform. Cortex no spot reactions; medulla KC- or red.
Portugal: Madeira.
Alyxoria-varia-8428a Alyxoria varia (Pers.) Ertz & Tehler
On Fagus sylvatica (wounded bark) and Populus spec. (lower image). Thallus thin, grey-brown; apothecia elongate, sometimes branched; disc variable, exposed with age. No spot reactions.
Central Europe; Germany: Hesse.
(Coll/ident: Eichler/Cezanne).
Alyxoria-varia-8428 Alyxoria varia (Pers.) Ertz & Tehler
Amandinea-punctata Amandinea punctata (Hoffm.) Coppins & Scheidegger
Corticolous: On barks of deciduous trees.
Thallus green-grey, thick, warted or areolate, without soralia; apothecia black, convex, young with indistinct margins; spores brown, 1-septate (difference to Lecidella elaeochroma). Thallus K-.
Central Europe; common.
Anaptychia-ciliaris-01 Anaptychia ciliaris (L.) Körber
Corticolous; on bark of deciduous trees.
Lobes tomentose, long, narrow (up to 2.5 mm wide), widening at the ends; with long, marginal cilia; lower surface concave, white (upper surface: grey to brownish); apothecia on short stalks, discs black, pruinose. Spot reaktions negative.
Central Europe; rare because of air pollution.
Anaptychia-ciliaris-1a Anaptychia ciliaris (L.) Körber
Anisomeridium-polypori Anisomeridium polypori (Ellis & Everh.) Barr.
On eutrophicated, rough bark of deciduous trees.
Thallus inconspicuous, whitish to pale green; perithecia not seen; always with conical, black pycnidia. At he tips of the pycnidia white packets of conidia are extruded (see image). No spot reactions.
Central Europe; Germany: Hesse.
Arthonia-cinnabarina-CE4115 Arthonia cinnabarina (DC.) Wallr.
On smooth bark of deciduous trees.
Thallus pale grey to fawn or dull orange (with Trentepohlia); apothecia rounded to stellate, disc whitish pruinose, rim with a cinnabar pruina (often disapperaring with age). No spot reactions.
Central Europe; Germany: Hesse.
(Coll/ident: Eichler/Cezanne).
Arthonia-didyma-8028 Arthonia didyma Körb.
On smooth bark of deciduous trees.
Thallus olive-grey to fawn; apothecia irregularely rounded; ascospores 1-septate, colourless becoming brown with age. No spot reactions.
Central Europe: Germany.
Arthonia-punctiformis-CE4882 Arthonia punctiformis Ach.
On smooth bark of deciduous trees (Acer pseudoplatanus).
Thallus inconspicuous (with Trentepohlia); apothecia irregularely rounded to elliptical. No spot reactions.
Central Europe; Germany; Hesse: Rhön mountains.
(Collected/identified by Teuber).
Arthonia-radiata-5731a Arthonia radiata (Pers.) Ach.
(with Pertusaria leioplaca: Upper image, lower side).
Corticolous, on smooth barked trees.
Thallus grey to brown, with a black prothallus; apothecia common, irregular or ±stellate; spores 3-septate. Colour reactions negative.
Central Europe; Germany: Hesse.
Arthonia-radiata-5731-02 Arthonia radiata (Pers.) Ach.
Central Europe; Germany: Hesse.
Arthonia-ruana-8940a Arthonia ruana  Massal.
Corticolous; on Fraxinus excelsior.
Thallus grey-white to brownish; delimited by a brown line; photobiont Trentepohlia; apotecia irregulary rounded to slightly stellate (up to 2 mm diam.); disc black, not pruinose; ascospores muriform (see lowest photo): Spot reactions negative.
Central Europe; Germany; Hesse: Taunus (Wispertal).
Arthonia-ruana-8940b Arthonia ruana  Massal.
Corticolous; on Fraxinus excelsior.
Central Europe; Germany; Hesse: Taunus (Wispertal).
Arthonia-ruana-Mikroskop-8939 Arthonia ruana  Massal.
Corticolous; on Fraxinus excelsior.
Microscopic details.
Central Europe; Germany; Hesse: Taunus (Wispertal).
Arthonia-spadicea-CE3624 Arthonia spadicea Leight.
On the base of deciduous trees.
Thallus inconspicuous, dark green-brown (with Trentepohlia); apothecia rounded, dark red to blackish-brown. No spot reactions.
Central Europe: Germany.
(Coll/ident: Eichler/Cezanne).
Arthonia-vinosa-CE1731 Arthonia vinosa Leight.
On bark of conifers (and oak trees).
Thallus orange-yellow, often with dark orange patches (with Trentepohlia); apothecia irregularely rounded, orange to dark brown. Apothecia and orange patches K+ purple.
Central Europe: Germany.
(Coll/ident: Eichler/Cezanne).
Arthothelium-ruanum-2689 Arthothelium ruanum (Massal.) Körber
Corticol; on bark of Fraxinus excelsior (young).
Thallus yellow-olive (with Trentepohlia), delimited by a brown line; apothecia irregularly stellate to rounded; margin inconspicuous; spores muriform, 14 X 7 µm.
Central Europe; Germany.
Aspicilia-cinerea-5991 Aspicilia cinerea (L.) Koerb.
On silicatic rocks.
Thallus grey, cracked-areolated; apothecia immersed, sitting in the centre of an areole; disc black, flat; thallin margin not disappearing with age. Thallus K+ red, Pd+ orange.
Sweden: Värmland.
Aspicilia-gr.-desertorum-7596 Aspicilia desertorum (doubtful)
On calcareous rocks.
Thallus consisting of fawn areoles. One (or more) apothecia per areole; disc pruinose.
Kurdish part of Iran.
(Identified by H. Sipman).
Aspicilia-farinosa-7602 Aspicilia farinosa (doubtful)
On calcareous rocks.
Kurdish region of Iran.
(Identified by H. Sipman).
Aspicilia-moenium-100717 Aspicilia moenium (Vainio) Thor & Timdal
On concrete walls.
Thallus with dark brown to blackish soralia on the lower side of squamules; squamules curved upwards, grey to olive, covered with a white pruina. No spot reactions.
Central Europe; Germany: Hesse.
Aspicilia-tibetica Aspicilia tibetica Sohrabi & Owe-Larsson
syn. Teuvoa tibetica (Sohrabi & Owe-Larsson) Sohrabi
(Identified by H. Sipman)