Lecidea promiscens Nyl.

Flora, 55: 358, 1872.
Synonyms: Lecidea promiscua var. promiscens (Nyl.) Clauzade & Cl. Roux; Lecidea strepsodea Nyl.
Description: Thallus crustose, endosubstratic or thinly episubstratic and then reduced to sparse, white granules/areoles around the apothecia, without a distinct prothallus. Medulla I+ intensely blue-violet. Apothecia lecideine, black, usually numerous and often arranged in lines along cracks in the rock, sessile and strongly constricted at base, rounded to angular by mutual compression, 0.5-2(-4) mm across, with a flat to convex, epruinose or slightly pruinose disc, and a thin, weakly raised, not or weakly flexuose, persistent proper margin. Proper exciple 60-150 µm wide, greenish black along a thin, peripheral rim, partly extending below the hypothecium, pale grey or colourless within, C-, the medullary hyphae 3-4.5 μm thick, densely compacted; epithecium dark green to greenish black, 12-18 μm high, N+ purple; hymenium colourless or pale green in upper part, 40-60(-80) μm high, I+ blue; paraphyses coherent, the apical cells swollen and to 7 μm wide; hypothecium medium to dark brown, paler in upper part. Asci 8-spored, clavate, Lecidea-type. Ascospores 1-celled, hyaline, oblong or oblong-ellipsoid, (7-)8-13(-14.5) x (2.5-)3.5-4.5(-5) μm, 2.1-3.7 times as long as wide. Pycnidia black, semi-immersed. Conidia bacilliform to thread-like, 9-15 μm long. Photobiont chlorococcoid. Spot tests: thallus K-, C-, KC-, P-, UV-. Chemistry: thallus with the confluentic acid syndrome, sometimes with 2’-0-methylperlatolic acid.
Growth form: Crustose
Substrata: rocks
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly sexual

Commonnes-rarity: (info)

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

pH of the substrata:

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Poleotolerance:

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Rarity

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P.L. Nimis CC BY-SA 4.0
TSB 20586


P.L. Nimis; Owner: Department of Life Sciences, University of Trieste
Herbarium: TSB (20586)
2001/12/12


Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_L/Texte_L_4/Lecidea_promiscens.htm
France, Col de la Cayolle, 2350 m - Alpes-de-Haute-Provence
23/7/2014


Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_L/Texte_L_4/Lecidea_promiscens.htm
France, Col de la Cayolle, 2350 m - Alpes-de-Haute-Provence
23/7/2014


Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_L/Texte_L_4/Lecidea_promiscens.htm
France, Col de la Cayolle, 2350 m - Alpes-de-Haute-Provence
23/7/2014


Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_L/Texte_L_4/Lecidea_promiscens.htm
France, Col de la Cayolle, 2350 m - Alpes-de-Haute-Provence
23/7/2014


Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_L/Texte_L_4/Lecidea_promiscens.htm
France, Col de la Cayolle, 2350 m - Alpes-de-Haute-Provence
23/7/2014


Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_L/Texte_L_4/Lecidea_promiscens.htm
France, Col de la Cayolle, 2350 m - Alpes-de-Haute-Provence
23/7/2014


Courtesy Danièle et Olivier Gonnet - Source: https://www.afl-lichenologie.fr/Photos_AFL/Photos_AFL_L/Texte_L_4/Lecidea_promiscens.htm
France, Col de la Cayolle, 2350 m - Alpes-de-Haute-Provence
23/7/2014