Biatoridium J. Lahm (1860)

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: 2. Biatoridium. Genus of unknown placement (incertae sedis); family of unknown placement (incertae sedis); Lecanorales.

Type Information: Type: Biatoridium monasteriense J. Lahm.

Taxonomic Literature: Hafellner J., Acta Bot. Fenn. 150: 39-46 (1994).

Biogeography: Checklist records: Germany.

Ecology: Biotroph; lichenized; corticolous.

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

Thallus: Indistinct or crustose, not subdivided parts, granular. Upper Surface: Green, grey, or brownish yellow; 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: Indistinct to distinct; external filaments absent. Exciple: White. Periphyses: Absent. Epithecium: Apical cells brownish yellow. Interascal Hyphae: Present, scarcely branched, not or scarcely anastomosed. Hypothecium: White or brownish yellow.

Asci: Tholus thickened, amyloid, entirely amyloid throughout; dehiscence lecanoralean.

Ascospores: More than 32 per ascus, globose, 2.5-4 µm long, 2.5-4 µm wide, obtuse; septa absent; wall thin, not thickened at the septum, hyaline, in Lugol's Solution negative, wall not ornamented.

Conidiomata: Present or absent resp. not observed.

Secondary Metabolites: Not detected.

(report generated 04.Okt.2007)