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Lecidea esuriens 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. Mycol. 34: 168 (1936); type specimen label data: Republic of South Africa, Cape Prov., Botany Bay, Van der Byl 999 (W, holotype).

Taxonomic Literature: Hertel H., Decheniana 127: 65-66 (1975).

Biogeography: Colline. Continent: Asia-Temperate and Africa (South Africa (Cape Prov.)).

Ecology: Biotroph; lichenized; endosubstratic or episubstratic (traces only); substrate non-calciferous.

Thallus: Not subdivided parts, continuous throughout; lobes angular at the front; separate thallus parts 0-.1 mm thick. Thallus Size and Differentiation: Large; main branches basally not constricted. Thallus Outline: Margin concolorous the thallus centre. Upper Surface: White or red (rusty coloured by Fe), plane; not sorediate; without thalloconidia thalloconidia.

Medulla: Iodine reaction in Lugol's solution negative.

Ascocarps: Soon sessile, slightly constricted or strongly constricted at the base, 10-50 per cm², .6-.8-(1) mm in diam.. Margin: Not flexuose or slightly flexuose, excluded, indistinct, 30-100 µm wide, epruinose. Disk: Plane to strongly convex, black, epruinose, pruina scarce, without an umbo. Exciple: Grey; not inspersed with crystals or inspersed with crystals? Epithecium: Apical cells olive. Hymenium: 60-80 µm high; white or pale green; iodine reaction: Lugol’s positive. Subhymenium: 10-40 µm high; white. Hypothecium: Brown.

Ascospores: Ellipsoid or oblong, (10)-11.2-12.3-(15) µm long, (4.5)-5-5.7-(7) µm wide; wall not ornamented.

Secondary Metabolites: Not detected.

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

(report generated 04.Okt.2007)

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