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Lecidea tragorum Zahlbr.

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. Lecideaceae Chevall. (1826); Lecanorales.

Type Information: Protologue: Zahlbruckner A., Ann. Mycol. 34: 168 (1936); type specimen label data: Republik of South Afrika, Naquamaland, Springbok, granite, P.A. van der Byl 1147 (W, holotype).

Taxonomic Literature: Taxonomic notes: Related to Lecidea sarcogynoides; see Rambold G., Biblioth. Lichenol. 34: ??? (1989). Rambold G., Biblioth. Lichenol. 34: 196-198 (1989).

Biogeography: Colline. Continent: Africa (Rep. South Africa) and Australasia (W.A., S.A., Victoria).

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

Thallus: Areolate (primarily areolate), continuous throughout; lobes rounded at the front; separate thallus parts.4-1-(1.3) mm thick. Thallus Size and Differentiation: Large; main branches basally not constricted or basally constricted. Thallus Outline: Margin concolorous the thallus centre. Upper Surface: Brown (beige to medium brown), plane or convex; not sorediate; without thalloconidia thalloconidia.

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

Ascocarps: Soon sessile, not constricted, slightly constricted, or strongly constricted at the base, 30-80 per cm², .5-.8-(2.2) mm in diam.. Margin: Not flexuose, persistent or excluded, 25-50 µm wide, epruinose. Disk: Plane to weakly convex, black, epruinose, without an umbo. Exciple: Hyphae radiating outwards; grey (TEST); inspersed with crystals? Epithecium: Apical cells green or turquoise. Hymenium: 45-70 µm high; white, pale green, or pink (rosé); iodine reaction: Lugol’s positive. Subhymenium: 15-30 µm high; white. Hypothecium: Brown.

Ascospores: Oblong or cylindrical, (7.5)-10.2-10.8-(15) µm long, (3.5)-4.8-5.2-(6) µm wide; wall not ornamented.

Conidia: (7)-7-8-(8) µm long.

Secondary Metabolites: Not detected or present, confluentic acid, 2'-O-methylmicrophyllinic acid, or 2'-O-methylperlatolic acid (traces).

Spot Tests: Medulla: K –, C –, PD – ascocarp margin (in section): K –, C – disk: C – hypothecium: K + purplish brown (chinoide reaction).

(report generated 04.Okt.2007)

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