Lecidea leucothallina var. discrepans Rambold & Hertel

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: Rambold G., Hertel H. in Hertel H., Biblioth. Lichenol. 58: 163-164, 1995; type specimen label data: Norway, Hordaland, Ulvik, Umgebung von Finse, SE-Hang des Lille Finsenut, 1300 m alt., 25 August 1984, H. Hertel 15224 (M, holotype).

Taxonomic Literature: Hertel H., Biblioth. Lichenol. 58: 163 (1995).

Biogeography: Alpine. Continent: Europe (Au, No).

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

Thallus: Areolate (primarily areolate), dispersed along the periphery, continuous in the centre or dispersed throughout and distinctly seperate; lobes angular or rounded at the front; separate thallus parts.2-.4 mm thick. Thallus Size and Differentiation: Large; main branches basally not constricted. Upper Surface: Brownish yellow or brown (pale beige to very pale brown), plane or convex; not sorediate; without thalloconidia thalloconidia.

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

Ascocarps: Forming on the pro- or hypothallus, soon sessile, not constricted to slightly constricted to strongly constricted at the base, 20-120 per cm², .6-1.3-(1.6) mm in diam.. Margin: Not flexuose to slightly flexuose, persistent to excluded, 30-60 µm wide, epruinose. Disk: Plane to weakly convex to strongly convex, black, epruinose, without an umbo. Exciple: Hyphae radiating outwards; 3.5-5 µm wide; grey to brown; not inspersed with crystals to inspersed with crystals. Epithecium: Apical cells brown to black, cell pigment reacting with 10% HCl (in H2O). Hymenium: 40-50 µm high; white; iodine reaction: Lugol’s positive. Subhymenium: 10-20 µm high; white. Hypothecium: Brown to dark brown.

Ascospores: Ellipsoid, (6.5)-7.8-10-(12) µm long, (3.2)-4-4.5-(5.5) µm wide; wall not ornamented.

Conidia: (11)-13.5-16-(20) µm long.

Secondary Metabolites: Present, hypostictic acid to stictic acid.

Spot Tests: Medulla: K –, C –, PD – (TEST!!) to + orange (control cortex microscopically!); ascocarp margin (in section): K –, C – disk: C – hypothecium: K – epihymenium: K –.

(report generated 04.Okt.2007)