Schistoplaca 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: basionymous or accepted. Taxonomic rank: genus. Schistoplaca. Lecanoraceae Körb. (1855); Lecanorineae; Lecanorales.

Type Information: Type: Schistoplaca alvearialis Brusse.

Taxonomic Literature: Brusse F.A., Mycotaxon 29: 245-249 (1987).

Ecology: Biotroph; lichenized; substrate calciferous.

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

Thallus: Crustose, rimose. Upper Surface: Grey or olive; 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, becoming adnate to soon sessile. Margin: Prominent; external filaments absent. Exciple: White. Periphyses: Absent. Epithecium: Apical cells black. Interascal Hyphae: Present, scarcely branched, not or scarcely anastomosed. Hypothecium: White or brownish yellow.

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

Ascospores: c. 8 per ascus, ellipsoid or broadly ellipsoid, 7.5-10 µm long, 6.5-8.5 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 all accross the thallus surface.

Conidiogeneous Cells: Apical. Conidia: Filiform.

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

(report generated 04.Okt.2007)