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Lecidea subceresina 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. Synonyms:-; Lecideaceae Chevall. (1826); Lecanorales.

Type Information: Protologue: Zahlbruckner A., Ann. Crypt. Exot. 5: 229-230 (1932); type specimen label data: Republic of South Africa, Natal, Drakensberge, Van Reenens Pass, World View, 1750 m, 3 December 1909, J. Brunnthaler (WU, holotype).

Taxonomic Literature: -.

Biogeography: Colline and montane. Continent: Africa.

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

Thallus: Areolate (primarily areolate), continuous throughout; lobes angular at the front; separate thallus parts.1-.25 mm thick. Thallus Size and Differentiation: Large; main branches basally not constricted. Thallus Outline: Margin concolorous the thallus centre. Upper Surface: White or grey, plane; not sorediate; without thalloconidia thalloconidia.

Medulla: Iodine reaction in Lugol's solution negative.

Ascocarps: Soon sessile, slightly constricted at the base, 80-250 per cm², .25-.4-(.7) mm in diam.. Margin: Not flexuose, persistent, 12-18 µm wide, epruinose. Disk: Plane, black, epruinose, without an umbo. Exciple: Hyphae radiating outwards; 3 µm wide; grey or brown; not inspersed with crystals. Epithecium: Apical cells olive, cell pigment reacting with 10% HCl (in H2O). Hymenium: 37-54 µm high; white or pink (rosé); iodine reaction: Lugol’s positive, hemiamyloid. Subhymenium: 15-20 µm high; white. Hypothecium: Brown or dark brown.

Ascospores: Ellipsoid or oblong, (8)-9.8-10.2-(12.5) µm long, (3)-3.3-3.7-(4) µm wide; wall not ornamented.

Conidia: (5)-5.5-6.5-(7) µm long.

Secondary Metabolites: Present, confluentic acid, 2'-O-methylmicrophyllinic acid (trace), and 2'-O-methylperlatolic acid (trace).

Spot Tests: Medulla: K –, C –, PD – ascocarp margin (in section): K –, C – disk: C – hypothecium: K – epihymenium: K –.

(report generated 04.Okt.2007)

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