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Lecidea fuscoatrata Nyl.

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., Flora 58: 301 (1875); type specimen label data: Austria, Tirol, Kühthei, F. Arnold (H-Nyl 15329a, holotype).

Taxonomic Literature: Taxonomic notes: Very insufficiently studied, rather critical taxon. Inoue M., J. Sci. Hiroshima Univ., Ser. B, Div. 2 (Bot.), 18(1): 33-34 (1982); Andreev M.P., Antonova I.M., Novit. Syst. Plant. Non Vasc. 26: 95 (1989).

Biogeography: Alpine. Continent: Europe (Au) and Asia-Temperate (S.W.most Japan).

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

Thallus: Areolate (primarily areolate), continuous throughout or dispersed along the periphery, continuous in the centre; lobes angular at the front; separate thallus parts.2-.3 mm thick. Thallus Size and Differentiation: Large; main branches basally not constricted. Upper Surface: Brown (yellow brown to medium brown), plane; 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, .6-.8-(1) mm in diam.. Margin: Not flexuose, persistent or excluded, 60-80 µm wide, epruinose. Disk: Plane to weakly convex, black, epruinose, without an umbo. Exciple: Hyphae radiating outwards; 4-5 µm wide; grey. Epithecium: Apical cells turquoise. Hymenium: 35-50 µm high; white; iodine reaction: Lugol’s positive ('dirty blue'). Subhymenium: 15-25 µm high; white. Hypothecium: Brown.

Ascospores: Ellipsoid, (7)-(11) µm long, (4)-(5) µm wide.

Secondary Metabolites: Not detected or present, stictic acid.

Spot Tests: Medulla: K – or + yellow (medulla), C –, PD – ascocarp margin (in section): K + deep yellow, C – disk: C – hypothecium: K –.

(report generated 04.Okt.2007)

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