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Carbonea assentiens (Nyl.) Hertel

Data Set Maintenance: Data set standard item. Data set author(s): Knoph J.-G., Rambold G. & Triebel D. (94-07-19). Data set reviewer(s): Kainz C. (00-11-15); to be published after submission; 94-07-19.

Nomenclature: Current taxonomic status: accepted. Taxonomic rank: species. Carbonea. Synonyms: Lecidea subplana Nyl. in Crombie; Lecidea subassentiens Nyl. in Crombie; Lecidea subassentiens Nyl. var. brachybasidia Zahlbr., Lecidea sciatrapha Hue; Lecanoraceae Körb. (1855).

Type Information: Basionym: Lecidea assentiens Nyl. in Crombie.

Taxonomic Literature: Knoph et al. in ed., Hertel (1984: 442-443, 1987b: 323, 1989: 213-215), Zahlbruckner (1925: 520, 686).

Biogeography: Continent: Antarctica.

Ecology: Biotroph; lichenized; substrate non-calciferous.

Thallus: Crustose, rimose or areolate (primarily areolate); separate thallus parts thin (0.1 - 0.4 mm). Thallus Outline: Soon disappearing. Upper Surface: White or brownish yellow, rough; special structures absent. Lower Surface: Special structures present:

Reproduction Strategy: With sexual (and possible asexual) stages. Ascocarps: Not emerging, soon sessile, slightly constricted at the base, .4-.6 mm in diam.. Margin: Smooth, persistent or excluded, prominent. Disk: Plane to weakly weakly convex, black, epruinose, without an umbo. Exciple: Black to brown. Epithecium: Apical cells slightly swollen, black to green to olive. Hymenium: White. Hypothecium: White.

Ascospores: Ellipsoid, (10)-10.6-11.4-13-(15) µm long, (4)-5.3-6-6.9-(7.5) µm wide; septa absent.

Secondary Metabolites: 2,5,7-trichloro-3-O-methylnorlichexanthone to atranorin to hopane-6a,22-diol to isoarthothelin (= 2,5,7-trichloronorlichexanthone) (in traces) to norlichexanthone to thiophanic acid (= 2,4,5,7-tetrachloronorlichexanthone).

(report generated 04.Okt.2007)

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