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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: basionymous or accepted. Taxonomic rank: species. Lecidea. Synonyms: Lecidea strepsodea Nyl., Lecidea promiscua var. promiscens (Nyl.) Clauzade & Roux; Lecideaceae Chevall. (1826); Lecanorales.

Type Information: Protologue: Nylander W., Flora 55: 358 (1872); type specimen label data: France, Dépt. Hautes Pyrenées: Barèges, on schist, W. Nylander (H-Nyl 15927, holotype).

Taxonomic Literature: Hertel H., Herzogia 2: 244-248 (1971); Nowak J., Tobolewski Z., Porosty Polskie (Warszawa & Kraków) 550 (1975); Hertel H., Khumbu Himal 6: 272-274 (1977); Hertel H., Mitt. Bot. München 13: 346-348 (1977); Buschardt A., Biblioth. Lichenol. 10: 196-1998 (1979); Hertel H., Mitt. Bot. München 17: 177 (1981); Rambold G., Biblioth. Lichenol. 34: 224-226 (1989); Andreev M.P., Kudratov I., Botan. Zhurn. 77: 106-107 (1992); Türk R., Poelt J., Österr. Akad. Wiss., Biosystematics and Ecology Ser. 3: 64 (1993 - bibliography of Austrian lichens); Hertel H., Mitt. Bot. München 30: 312 (1991); Hertel H., Biblioth. Lichenol. 58: 167 (1995).

Biogeography: Alpine. Continent: Northern America (Canada), Southern America (Argentina, Chile), Asia-Temperate (Turkey, Kasachstan, Russia), and Australasia (Australia (Australian Alps)).

Ecology: Biotroph; lichenized; endosubstratic or episubstratic (traces); substrate non-calciferous.

Thallus: Not subdivided parts, continuous throughout, dispersed along the periphery, continuous in the centre, or dispersed throughout and distinctly seperate; lobes angular at the front; separate thallus parts 0-.2 mm thick. Thallus Size and Differentiation: Large; main branches basally not constricted. Thallus Outline: Margin concolorous the thallus centre. Upper Surface: White, plane; not sorediate; without thalloconidia thalloconidia.

Ascocarps: Soon sessile, slightly constricted or strongly constricted at the base, 10-100 per cm², .6-1.2-(2.7) mm in diam.. Margin: Not flexuose or slightly flexuose, persistent or excluded, 35-110 µm wide, epruinose. Disk: Plane to weakly convex to rarely strongly convex, black, epruinose, without an umbo. Exciple: Hyphae radiating outwards; 3-5 µm wide; grey or rarely pink (rosé); not inspersed with crystals or inspersed with crystals. Epithecium: Apical cells olive, green, turquoise, or rarely brown, cell pigment reacting with 10% HCl (in H2O). Hymenium: 40-(mean: 48)-60-(70) µm high; white; iodine reaction: Lugol’s positive. Subhymenium: 8-45 µm high; white or rarely pale green. Hypothecium: Brownish yellow or brown.

Ascospores: Ellipsoid, (7.3)-8.5-11.8-(16) µm long, (2.8)-3.4-4.4-(5) µm wide; wall not ornamented.

Secondary Metabolites: Not detected or present, confluentic acid, 2'-O-methylmicrophyllinic acid (traces), or 2'-O-methylperlatolic acid (traces).

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

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