Lecidea obluridata Nyl.

Flora, 56: 201, 1873.
Synonyms: Lecidea nigrogrisea Nyl.
Distribution: N - Piem (Isocrono & al. 2003). C - Sar. S - Si (Brackel 2008c).
Description: Thallus crustose, episubstratic, grey-brown or pale brown, more or less shiny, often delimited by a black prothallus, areolate, the areoles concave to flat, often whitish at margins, 0.2-1.6 mm wide. Medulla white, I-. Apothecia lecideine, black, epruinose, arising between the areoles, round to angular in outline, (0.3-)0.5-1(-1.6) mm across, at first adnate then subsessile, with a flat to slightly convex disc and a thin, sometimes flexuose, persistent or finally excluded proper margin. Proper exciple thin, brown-black at least in outer part, K-; epithecium blackish green, with crystalline granules, K+ intensifying green, N+ deep purple-red; hymenium colourless, (40-)50-65(-75) µm high; paraphyses simple or sparingly branched in upper part, coherent, the apical cells slightly swollen, up to 3 µm wide; hypothecium medium to dark brown, K+ deep reddish brown. Asci 8-spored, clavate, Lecidea_type. Ascospores 1-celled, hyaline, broadly ellipsoid, (7-)9-11(-12) x (3.7-)4-5(-6) µm, 2.3-2.8 times as long as wide. Pycnidia black. Conidia short-bacilliform, 5-8 µm long. Photobiont chlorococcoid. Spot tests: cortex K-, C-, KC-, P-; medulla K+ faintly yellow, C-, KC-, P-, UV-. Chemistry: medulla with confluentic acid.
Note: a rather poorly known silicicolous species based on a type from low elevation in the Pyrenees, with several records in Western and Central Europe, and across the Alps.
Growth form: Crustose
Substrata: rocks
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly sexual
Poorly known taxon in need of further study

Commonnes-rarity: (info)

Alpine belt: absent
Subalpine belt: very rare
Oromediterranean belt: very rare
Montane belt: very rare
Submediterranean belt: absent
Padanian area: absent
Humid submediterranean belt: absent
Humid mediterranean belt: absent
Dry mediterranean belt: absent

pH of the substrata:


Solar irradiation:








Altitudinal distribution:


Predictive model
Herbarium samples

S. Poumarat http://mycologie.catalogne.free.fr/lichens.htm

S. Poumarat - Source: http://mycologie.catalogne.free.fr/lichens.htm