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Data Set Maintenance: Data set standard item. Data set author(s): Hertel H. (99-01-01). Data set not revised.

Nomenclature: Current taxonomic status: accepted or basionymous. Taxonomic rank: species. Lecidea. Synonyms:-; Lecideaceae Chevall. (1826); Lecanorales.

Type Information: Protologue: Hertel H., Decheniana 127: 72-73 (1975); type specimen label data: France, Dépt. Hautes Alpes, Col du Lautaret, NW-Hang von Les Clouchettes, 2200 m, 13 July 1970, H. Hertel 11949 (M, holotype).

Taxonomic Literature: Taxonomic notes: A critical species, which needs further study. Hertel H., Khumbu Himal 6: 281-282 (1977); Hertel H., Herzogia 5: 457-458 (1981) Hertel H., Mitt. Bot. München 17: 177-178 (1981); Clauzade G., Roux C., Bull. Soc. Bot. Centre-Ouest, nouv. ser., num. spec. 7: 461 (1985); Hertel H., Biblioth. Lichenol. 58: 172 (1995).

Biogeography: Alpine. Continent: Europe (Ga, Hs, Sb), Northern America (Greenland?, NWT,Alaska), Southern America (Venezuela: 4200-4700 m alt.), and Asia-Temperate (Nepal: 5200 m; Mongolia: 2800-3400 m).

Thallus: Separate thallus parts 0 mm thick. Thallus Size and Differentiation: Large.

Medulla: Iodine reaction in Lugol's solution positive (somtimes very pale or rather local).

Ascocarps: Soon sessile, slightly constricted or strongly constricted at the base, 25-50 per cm², .5-1-(2.7) mm in diam.. Margin: Not flexuose or slightly flexuose, persistent or excluded, 50-150 µm wide, rarely epruinose. Disk: Plane, weakly convex, or strongly convex, black, epruinose, without an umbo. Exciple: Grey; not inspersed with crystals or inspersed with crystals. Epithecium: Apical cells olive, green, or turquoise, cell pigment reacting with 10% HCl (in H2O), cell pigment HCl+ blue. Hymenium: 35-55 µm high; white; iodine reaction: Lugol’s positive. Subhymenium: 0-70 µm high; white or pale green. Hypothecium: White or pale green.

Ascospores: Ellipsoid or oblong, (5)-6.6-10.6-(13.5) µm long, (2.5)-3.1-4-(5) µm wide; wall not ornamented.

Spot Tests: Medulla: K –, C –, PD – ascocarp margin (in section): K – or + bluish red (cortex), C – disk: C – hypothecium: K – epihymenium: K –.

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