Heterocyphelium Vain. (1927)

Data Set Maintenance: Data set standard item. Data set author(s): Rambold G. Data set not revised; to be published after submission.

Nomenclature: Current taxonomic status: accepted or basionymous. Taxonomic rank: genus. Number of known taxa within this rank: 1. Heterocyphelium. Genus of unknown placement (incertae sedis); of unknown placement (incertae sedis).

Type Information: Type: Heterocyphelium leucampyx (Tuck.) Vain.

Taxonomic Literature: Tibell L., Beih. Nova Hedwigia 79: 597-713 (1984).

Biogeography: Checklist records: United States and Canada (continental).

Ecology: Biotroph; lichenized; corticolous.

Lichen Photobionts: Primary photobiont present; trentepohlioid. Secondary photobiont absent.

Thallus: Crustose, granular. Upper Surface: Green or grey; 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 or irregular, forming all across the thallus surface, soon sessile, stromatic. Margin: Prominent; external filaments absent. Exciple: Black or brown. Periphyses: Absent. Hymenium: Mazaedioid. Interascal Hyphae: Present, scarcely branched.

Asci: Tholus not thickened; dehiscence prototunicate.

Ascospores: Ellipsoid, 9-10 µm long, 5-6 µm wide, obtuse; septa absent or present; transversally septate, 1-4-transversally septate; wall thin or thick, distinctly differentiated into primary and secondary wall, not thickened at the septum, laterally constricted where the septum meets the spore wall, dark brown, in Lugol's Solution negative, wall not ornamented.

Conidiomata: Absent resp. not observed or present.

Secondary Metabolites: Not detected.

(report generated 04.Okt.2007)