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Lecidea quartzina Stizenb.

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: Stizenberger E., Jahresb. St. Gall. Naturw. Ges. 1889-1890: 160 (1891); type specimen label data: Republic of South Africa, Cape Prov., supra saxa granitica decomposita ad latera mts. Leonis prope Cape Town, 25 June 1887, MacOwan (ZT, holotype).

Biogeography: Colline. Continent: Africa (Cape Region).

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

Thallus: Not subdivided parts, areolate (primarily areolate), continuous throughout to dispersed along the periphery, continuous in the centre; lobes angular at the front; separate thallus parts.1-.3 mm thick. Thallus Size and Differentiation: Large; main branches basally not constricted. Thallus Outline: Margin concolorous the thallus centre. Upper Surface: White to lemon (citrine), plane; not sorediate; without thalloconidia thalloconidia.

Medulla: Iodine reaction in Lugol's solution negative to in Lugol's solution positive.

Ascocarps: Soon sessile, slightly constricted to strongly constricted at the base, 20-60 per cm², .6-.8-(1) mm in diam.. Margin: Not flexuose to slightly flexuose, persistent to excluded, 45-65 µm wide, epruinose. Disk: Plane to weakly convex, black, epruinose, without an umbo. Exciple: Hyphae radiating outwards; 3-4 µm wide; grey; not inspersed with crystals to inspersed with crystals. Epithecium: Apical cells green, cell pigment HCl+ blue (sometimes weak). Hymenium: 40-58 µm high; white; iodine reaction: Lugol’s positive. Subhymenium: 10-25 µm high; white. Hypothecium: Brown to dark brown.

Ascospores: Subglobose to broadly ellipsoid, (5)-6.1-6.4-(8) µm long, (4.2)-5.1-5.5-(7) µm wide; wall not ornamented.

Conidia: (8)-9-10-(10.5) µm long.

Secondary Metabolites: Present, confluentic acid.

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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