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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 dilabens Th.Fr., Lecidea gregalis Arnold, Lecidea speciosa Müll.Arg., Lecidea confluens f. refluens Vain.; Lecideaceae Chevall. (1826); Lecanorales.

Type Information: Protologue: Nylander W., Flora 57: 357 (1874); type specimen label data: France, Dépt. Hautes Pyrénées, Barège, W. Nylander (H-Nyl 15927, holotype).

Taxonomic Literature: Taxonomic notes: A rather critical taxon, near to Lecidea promiscens; variability of characters insufficiently known. Hertel H., Herzogia 2: 48 (1970); Hertel H., Khumbu Himal 6: 274-275 (1977); Clauzade G., Roux C., Bull. Soc. Bot. Centre-Ouest, nouv. ser., num. spec. 7: 463 (1985); Nimis P.L., Poelt J., Studia Geobotanica 7 (Suppl. 1): 128-129 (1987); Hertel H., Biblioth. Lichenol. 58: 167 (1995).

Biogeography: Montane and alpine. Continent: Europe (Au, Cz, Ga, Gr, He, It Sb) and Asia-Temperate (Kirgisia/Kazachstan; Bering-Strait-Region).

Thallus: Not subdivided parts, areolate (primarily areolate), continuous throughout; lobes angular at the front; separate thallus parts.2-1.3 mm thick. Thallus Size and Differentiation: Large; main branches basally not constricted. Thallus Outline: Margin concolorous the thallus centre. Upper Surface: White, lemon (citrine), or grey (very pale), plane or convex; not sorediate; without thalloconidia thalloconidia.

Ascocarps: Soon sessile, not constricted or slightly constricted at the base, 40-170 per cm², .7-1.1-(2.4) mm in diam.. Margin: Not flexuose or slightly flexuose, persistent or excluded, 40-150 µm wide, epruinose. Disk: Plane to strongly convex, black, epruinose, without an umbo. Exciple: Paraplectenchymatous (in outer part); hyphae 3-4 µm wide; grey; not inspersed with crystals or inspersed with crystals. Epithecium: Apical cells olive or brown, cell pigment reacting with 10% HCl (in H2O). Hymenium: 40-60 µm high; white; iodine reaction: Lugol’s positive. Subhymenium: 5-27 µm high; white. Hypothecium: Brownish yellow or brown.

Ascospores: Ellipsoid or oblong, (7)-7.5-11.5-(13) µm long, (2.5)-3.2-4.3-(5) µm wide; wall not ornamented.

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

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