Schizodiscus Brusse (1988)

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. Schizodiscus. Porpidiaceae Hertel & Hafellner (1984); Cladoniineae; Lecanorales.

Type Information: Type: Schizodiscus afroalpinus Brusse.

Taxonomic Literature: Brusse F.A., Bothalia 18: 94-96 (1988).

Ecology: Biotroph; lichenized; substrate non-calciferous.

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

Thallus: Crustose, rimose or areolate (primarily areolate). Upper Surface: 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, forming all across the thallus surface, not emerging, becoming adnate to soon sessile. Margin: Prominent; external filaments absent. Exciple: Black or brown. Periphyses: Absent. Epithecium: Apical cells brown. Interascal Hyphae: Present, scarcely branched, not or scarcely anastomosed. Hypothecium: Brownish yellow.

Asci: Tholus thickened, amyloid, with amyloid tube; dehiscence lecanoralean.

Ascospores: c. 8 per ascus, ellipsoid, 10-17.5 µm long, 6-7.5 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 or stipitate, formed all accross the thallus surface.

Conidiogeneous Cells: Apical. Conidia: Bacilliform.

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

(report generated 04.Okt.2007)