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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: Llimona X. in Vezda A., Lich. Sel. Exs., fasc. 47, no. 1160 (1973); type specimen label data: Spain, Prov. Pamplona, Las Bardenas, Caparosso, 400 m, ad gypsum compactum locis sepentr. vel occid. spectantibus, 30-60° inclinatis, 24 September 1972, X. Llimona (Vezda, Lich. Sel. Exs. 1160: M, isotype).

Taxonomic Literature: Taxonomic notes: Very close to Lecidea fuscoatra; variability of characters still insufficiently known. Llimona X., Opusc. Sparsa, Bot. Dept. Fac. Sci. Univ. Barcinonensis 6: 5 (1974); Hertel H., Khumbu Himal 6: 248-250 (1977); Casares-Porcel, Hafellner & Gutierrez-Carretero, Lichenologist 28: 39-40, 1996.

Ecology: Biotroph; lichenized; episubstratic; substrate non-calciferous; gypsiferous.

Thallus: Not subdivided parts, areolate (primarily areolate), continuous throughout; lobes angular at the front; separate thallus parts.5-6 mm thick. Thallus Size and Differentiation: Large; main branches basally not constricted. Thallus Outline: Margin concolorous the thallus centre. Upper Surface: Lemon (citrine) to grey, convex; not sorediate; without thalloconidia thalloconidia.

Ascocarps: Soon sessile, not constricted to slightly constricted at the base, 5-80 per cm², .6-1-(2.3) mm in diam.. Margin: Not flexuose, excluded, indistinct, 25-80 µm wide, epruinose to distinctly pruinose. Disk: Plane to weakly convex to strongly convex, black, epruinose, pruina scarce to abundant, without an umbo. Exciple: Hyphae radiating outwards; 3-4 µm wide; grey; inspersed with crystals. Epithecium: Apical cells olive, cell pigment reacting with 10% HCl (in H2O). Hymenium: 60-75 µm high; white; iodine reaction: Lugol’s positive, hemiamyloid. Subhymenium: 20-40 µm high; white. Hypothecium: Brown to dark brown.

Ascospores: Ellipsoid to oval, (10)-12.3-16.2-(24) µm long, (4)-4.9-6.3-(7.5) µm wide; wall not ornamented.

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

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