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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:-; Lecideaceae Chevall. (1826); Lecanorales.

Type Information: Protologue: Nylander W. in Hasse H.E., Bull. Southern Calif. Acad. 2: 60 (1903); type specimen label data: USA, California, summit of San Gabriel Range, c. 3000 m, granite, 1897, H.E. Hasse 799 (W, isotype).

Biogeography: Colline, montane, and alpine. Continent: Northern America (California).

Thallus: Areolate (primarily areolate), subsquamulose, continuous throughout or dispersed along the periphery, continuous in the centre; lobes rounded at the front; separate thallus parts.5-.8 mm thick. Thallus Size and Differentiation: Large; main branches basally not constricted or basally constricted. Thallus Outline: Margin concolorous the thallus centre. Upper Surface: Brown, convex; not sorediate; without thalloconidia thalloconidia.

Upper Cortex: Epicortex present. Medulla: Iodine reaction in Lugol's solution positive.

Ascocarps: Soon sessile, slightly constricted at the base, up to (2.1) mm in diam.. Margin: Not flexuose or slightly flexuose, excluded, 45-60 µm wide, epruinose. Disk: Weakly convex to strongly convex, black, epruinose, without an umbo. Exciple: Grey; inspersed with crystals. Epithecium: Apical cells turquoise. Hymenium: 45-50 µm high; white; iodine reaction: Lugol’s positive (TEST). Subhymenium: 45-55 µm high; white or pale green. Hypothecium: White.

Ascospores: Ellipsoid, (6)-7.5-7.9-(10) µm long, (3)-3.5-3.7-(4.5) µm wide; wall not ornamented.

Spot Tests: Medulla: K + yellow, C –, PD + orange; ascocarp margin (in section): K – or + deep yellow, C – disk: C – hypothecium: K + purplish brown (chinoide reaction).

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