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Coenogonium Ehrenb. (1820)

Data Set Maintenance: Data set standard item. Data set author(s): Rambold G. Data set reviewer(s): Scholz P. (06-06-12); not revised; to be published after submission.

Nomenclature: Current taxonomic status: accepted or basionymous. Taxonomic rank: genus. Number of known taxa within this rank: 15. Coenogonium (^). Gyalectaceae (A. Massal.) Sitzenb. (1862); Gyalectales.

Type Information: Type: Coenogonium linkii Ehrenb.

Taxonomic Literature: Galloway D.J., Flora of New Zealand Lichens: i-lxxiii, 1-662 [131-132], Wellington (1985); Kantvilas G., Lichenologist 28: 229-337 (1996); Lücking R. & Kalb K., Bot. J. Linn. Soc. 139: 171-180 (2002); Santesson R., Symb. Bot. Upsal. 12: 1-590 [403-410] (1952); Uyenco F.R., Bryologist 66: 217-224 (1963).

Biogeography: Checklist records: Bolivia, Guianas, New Zealand, Sonoran Desert, Thailand, United States and Canada (continental), and Republic of South Africa.

Ecology: Biotroph; lichenized; corticolous or epiphyllous.

Lichen Photobionts: Primary photobiont present; trentepohlioid. Primary photobiont taxonomy: Trentepohlia (A. Beck 22-05-97); Trentepohliaceae; Trentepohliales, Ulvophyceae, Eukariota. Secondary photobiont absent.

Thallus: Granular or filamentose. Upper Surface: Green, olive, yellow, or orange; special structures absent. Lower Surface: Attached by the whole lower surface; special structures absent.

Reproduction Strategy: Only known as sterile, asexually reproducing form or with sexual (and possible asexual) stages. Ascocarps: Apothecioid, orbicular, forming all across the thallus surface, soon sessile to substipitate. Margin: Prominent. Periphyses: Absent. Interascal Hyphae: Present, scarcely branched, not or scarcely anastomosed. Hypothecium: White.

Ascospores: c. 8 per ascus, ellipsoid, oblong-obtuse, oblong, or fusiform, 6-12 µm long, 2-4 µm wide; septa absent or present; transversally septate, 1-1-transversally septate; wall thin, not thickened at the septum, hyaline, in Lugol's Solution negative, wall not ornamented.

Conidiomata: Absent resp. not observed or present; pycnidial; sessile to stipitate, formed all accross the thallus surface.

Conidia: Fusiform.

Secondary Metabolites: Not detected.

(report generated 04.Okt.2007)


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