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Tephromela arafurensis Rambold

Data Set Maintenance: Data set standard item. Data set author(s): Rambold G. (94-08-27). Data set reviewer(s): Kainz C. (00-12-22); to be published after submission; 94-08-27.

Nomenclature: Current taxonomic status: accepted or basionymous. Taxonomic rank: species. Tephromela. Lecanoraceae Körb. (1855).

Taxonomic Literature: Rambold G. 1989. Biblioth. Lichenol. 34: 1-346 [145-148].

Biogeography: Continent: Australasia.

Ecology: Biotroph; lichenized; substrate non-calciferous.

Thallus: Crustose, rimose; separate thallus parts thin (0.2 - 0.5 mm). Thallus Outline: Soon disappearing. Upper Surface: Grey, white, olive, or brownish yellow, rough; not sorediate.

Reproduction Strategy: With sexual (and possible asexual) stages. Ascocarps: Soon sessile, slightly constricted at the base, .8-.9 mm in diam.. Margin: Lecanorine, more or less persistent, distinct (mostly developed), brighter than the surrounding thallus. Disk: Plane to sub-weakly convex, black, epruinose. Exciple: White. Amphithecium (thalline excipulum): Photobiont abundant. Epithecium: Apical cells slightly swollen, brown (dark violet-brown). Hymenium: Brown (weakly violet-brown) to white to pink (rosé). Hypothecium: White or pale brownish yellow.

Ascospores: Ellipsoid, 9-14 µm long, 5-7 µm wide.

Conidiomata: Immersed.

Conidia: Cylindrical; 11-14 µm long.

Secondary Metabolites: Anziaic acid, atranorin, glomelliferic acid, or perlatolic acid.

Spot Tests: Upper surface: C –.

(report generated 04.Okt.2007)

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