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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: Magnusson A.H., Bot. Not. 73 (1951); type specimen label data: Sweden, Jämtland, Åre, Handöl cataracts, eastern side, under overhanging cliff, 550 m, 27 July 1950, A.H. Magnusson 22165 (UPS, holotype).

Taxonomic Literature: Taxonomic notes: Very close to Lecidea praenubila; variability of characters very insufficiently known. Hertel H., Biblioth. Lichenol. 58: 168 (1995).

Thallus: Areolate (primarily areolate), continuous throughout, dispersed along the periphery, continuous in the centre, or dispersed throughout and distinctly seperate; lobes angular or rounded at the front; separate thallus parts.1-.2 mm thick. Thallus Size and Differentiation: Large or small; main branches basally not constricted. Thallus Outline: Margin brighter than disk the thallus centre. Upper Surface: Brown (yellow-brown), plane or convex; not sorediate; without thalloconidia thalloconidia.

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

Ascocarps: Soon sessile, slightly constricted or strongly constricted at the base, 50-90 per cm², .3-.4-(.5) mm in diam.. Margin: Not flexuose, persistent or excluded, 30-40 µm wide, epruinose. Disk: Plane to weakly convex, black, epruinose, without an umbo. Exciple: Hyphae radiating outwards; 3-3.5 µm wide; grey; inspersed with crystals. Epithecium: Apical cells green or turquoise, cell pigment HCl+ blue. Hymenium: (40)-48-57-(60) µm high; white or pale green; iodine reaction: Lugol’s positive. Subhymenium: 16-35 µm high; white. Hypothecium: White or brownish yellow.

Ascospores: Ellipsoid, (11)-12.5-13.5-(17) µm long, (4.5)-5.3-5.7-(7) 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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