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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. Taxonomic rank: species. Lecidea. Synonyms:-; Lecideaceae Chevall. (1826); Lecanorales.

Type Information: Protologue: Coppins B.J., James P.W., Hertel H. in Hertel H., Biblioth. Lichenol. 58: 173 (1995); type specimen label data: England, West Sussex, Petworth V.C.13, on acid rock adjacent to mortar interstices on south-facing wall of Sutton church, March 1976 (BM, holotype).

Taxonomic Literature: Taxonomic notes: Variability of characters very insufficiently known. Hertel H., Biblioth. Lichenol. 58: 173 (1995).

Thallus: Not subdivided parts, areolate (primarily areolate), dispersed throughout and distinctly seperate; lobes angular at the front; separate thallus parts.2-.5 mm thick. Thallus Size and Differentiation: Large; main branches basally not constricted. Thallus Outline: Margin concolorous the thallus centre. Upper Surface: White or lemon (citrine), plane or convex; not sorediate; without thalloconidia thalloconidia.

Ascocarps: Soon sessile, not constricted or slightly constricted at the base, 12-20 per cm², .9-1.3-(2) mm in diam.. Margin: Not flexuose, persistent, 60-70 µm wide, epruinose. Disk: Plane to weakly convex, black, epruinose, without an umbo. Exciple: Hyphae radiating outwards; grey; inspersed with crystals. Epithecium: Apical cells olive (rather pale), cell pigment reacting with 10% HCl (in H2O). Hymenium: 60-95-(110) µm high; white; iodine reaction: Lugol’s positive. Subhymenium: 10-25 µm high; white. Hypothecium: Brown or dark brown.

Ascospores: Ellipsoid, (10)-13-13.4-(18) µm long, (5)-5.9-6.3-(7) µm wide; wall not ornamented.

Secondary Metabolites: Present, gyrophoric acid and lecanoric acid (VERMUTUNG).

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

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