Coronoplectrum Brusse (1987)

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. Coronoplectrum. Lecanoraceae Körb. (1855); Lecanorineae; Lecanorales.

Type Information: Type: Coronoplectrum namibicum Brusse.

Taxonomic Literature: Brusse F.A., Mycotaxon 28: 131-135 (1987).

Biogeography: Checklist records: Namibia.

Ecology: Biotroph; lichenized; substrate non-calciferous.

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

Thallus: Crustose or fruticose, not subdivided parts, subfruticose. Upper Surface: Grey or green; special structures absent. Lower Surface: Attached by the whole lower surface or attached by holdfasts; special structures absent.

Reproduction Strategy: Only known as sterile, asexually reproducing form or with sexual (and possible asexual) stages. Ascocarps: Apothecioid, orbicular, forming directly at the tip of the thallus parts, soon sessile or stipitate. Margin: Prominent; external filaments absent. Exciple: White. Periphyses: Absent. Interascal Hyphae: Present, scarcely branched, not or scarcely anastomosed. Hypothecium: White.

Asci: Tholus thickened, amyloid, with non-amyloid wide axial body and divergent amyloid flanks towards apex; dehiscence lecanoralean.

Ascospores: c. 8 per ascus, ellipsoid, 7-9.5 µm long, 4-5.5 µm wide, obtuse; septa absent; wall thin, not thickened at the septum, hyaline, in Lugol's Solution negative, wall not ornamented.

Conidiomata: Absent resp. not observed or present; pycnidial; immersed, formed along the thallus periphery.

Conidiogeneous Cells: Intercalar. Conidia: Curved.

Secondary Metabolites: Present, of the following substance class(es): ß-orcinol depsides and ß-orcinol depsidones.

(report generated 04.Okt.2007)