Eiglera flavida (Hepp) Hafellner

Beih. Nova Hedwigia, 79: 276, 1984. Basionym: Lecanora flavida Hepp - Flecht. Eur.: nr. 630, 1860.
Synonyms: Aspicilia argillacea Anzi; Aspicilia flavida (Hepp) Rehm; Aspicilia micrantha Körb.; Aspicilia ochracea A. Massal.; Lecidea contraria Malme
Description: Thallus crustose, thinly episubstratic, continuous to cracked, pale yellow-grey to pale brown, forming 1-2 cm wide patches, ecorticate or with a thin protocortex; medulla poorly evident, the whole thallus been filled with algal cells. Apothecia immersed, almost aspicilioid, circular in outline, up to 0.4 mm across, with a black, concave to flat disc, and a thin, not prominent proper margin. Proper exciple poorly developed, more or less paraplectenchymatous, formed from modified paraphysoids, colourless and very thin in lower part, greenish and thicker in upper part; epithecium blue-green, N+ purple-red to violet, K-; hymenium pale blue-green in upper part, colourless in lower part, 60-80 µm high, I+ dark blue; paraphyses coherent, simple or sparingly branched in upper part, 1-1.7 mm thick at mid-level, often slightly moniliform in upper part, the apical cells up to c. 3 µm wide; hypothecium colourless, c. 20 µm high. Asci 8-spored, broadly clavate, with a uniformly K/I+ blue tholus without an ocular chamber, surrounded by a thick, gelatinous, K/I+ blue sheath. Ascospores 1-celled, hyaline, broadly ellipsoid to ellipsoid, (12-)15-18(-23) x (7-)10-15(-17) µm. Pycnidia immersed, 0.03-0.05 mm wide, with a dark blue-green, N+ purple wall. Conidia short-cylindrical, 3-4 µm long. Photobiont chlorococcoid, the cells 7-12 µm wide (but cyanobacteria are often loosely associated with the thallus). Spot tests: thallus K-, C-, KC-, P-, UV-. Chemistry: without lichen substances.
Growth form: Crustose
Substrata: rocks
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly sexual

Commonnes-rarity: (info)

Alpine belt: rare
Subalpine belt: rather rare
Montane belt: extremely rare
Dry submediterranean belt: absent
Humid submediterranean belt: absent
Padanian area: absent

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Rarity

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P.L. Nimis CC BY-SA 4.0
TSB 35694


P.L. Nimis CC BY-SA 4.0
TSB 33657


P.L. Nimis CC BY-SA 4.0
TSB 33217


Pier Luigi Nimis - CC BY-SA 4.0
TSB 33657


Pier Luigi Nimis - CC BY-SA 4.0
TSB 33657


Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_E/Texte_E/Eiglera_flavida.htm
France, Villard-de-Lans - Isère - (38) - Saxicole, sur calcaire compact - Sentier sous le Col Vert, alt. 1650 m
19/09/2015


Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_E/Texte_E/Eiglera_flavida.htm
France, Villard-de-Lans - Isère - (38) - Saxicole, sur calcaire compact - Sentier sous le Col Vert, alt. 1650 m
19/09/2015


Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_E/Texte_E/Eiglera_flavida.htm
France, Villard-de-Lans - Isère - (38) - Saxicole, sur calcaire compact - Sentier sous le Col Vert, alt. 1650 m
19/09/2015


Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_E/Texte_E/Eiglera_flavida.htm
France, Villard-de-Lans - Isère - (38) - Saxicole, sur calcaire compact - Sentier sous le Col Vert, alt. 1650 m
19/09/2015


Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_E/Texte_E/Eiglera_flavida.htm
France, Villard-de-Lans - Isère - (38) - Saxicole, sur calcaire compact - Sentier sous le Col Vert, alt. 1650 m
19/09/2015


Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_E/Texte_E/Eiglera_flavida.htm
France, Villard-de-Lans - Isère - (38) - Saxicole, sur calcaire compact - Sentier sous le Col Vert, alt. 1650 m
19/09/2015