Fuscoderma (D. J. Galloway & P. M. Jørg.) P. M. Jørg. & D. J. Galloway (1989)

Data Set Maintenance: Data set standard item. Data set author(s): Rambold G. Data set reviewer(s): Jørgensen P. M. (98-03-20); revised; to be published after submission.

Nomenclature: Current taxonomic status: accepted. Taxonomic rank: genus. Number of known taxa within this rank: 3. Fuscoderma. Genus of unknown placement (incertae sedis); Peltigerineae; Lecanorales.

Type Information: Type: Fuscoderma applanatum (D.J. Galloway & P.M. J rg.) P.M. J rg. & D.J. Galloway (1989).

Taxonomic Literature: Jørgensen P.M. & Galloway D.J., Lichenologist 21: 295-301 (1989).

Biogeography: Checklist records: New Zealand and Australia.

Ecology: Biotroph; lichenized; corticolous.

Lichen Photobionts: Primary photobiont present; cyanobacterial. Primary photobiont taxonomy: Nostoc; Nostocaceae; Nostocales. Secondary photobiont absent.

Thallus: Crustose or foliose, not subdivided parts, squamulose, placodioid, or rimose, lobed. Thallus Outline: Soon disappearing. Upper Surface: Brown, grey, or brownish yellow; special structures absent or present:; not pseudocyphellate; eciliate; without hairs; not isidate; not sorediate or sorediate; not cephalodiate; not lobulate; without granules granules, without thalloconidia thalloconidia. Lower Surface: Attached by holdfasts; special structures absent or present:; not pseudocyphellate; not cyphellate; not rhizinate; without thalloconidia thalloconidia; not cavernulate; not tomentose or tomentose.

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, soon sessile. Margin: Prominent; external filaments absent. Exciple: Brown, white, or brownish yellow. Periphyses: Absent. Epithecium: Apical cells brown or brownish yellow. Interascal Hyphae: Present, scarcely branched, not or scarcely anastomosed. Hypothecium: Brown, white, or brownish yellow.

Asci: Tholus thickened, not amyloid; dehiscence lecanoralean.

Ascospores: c. 8 per ascus, ellipsoid or fusiform, 10-16 µm long, 5-7 µm wide, aciculate; septa absent; wall not thickened at the septum, hyaline, in Lugol's Solution negative, wall ornamented.

Conidiomata: Absent resp. not observed or present; pycnidial; immersed.

Conidia: Globose or bacilliform.

Secondary Metabolites: Not detected or present, of the following substance class(es): ß-orcinol depsidones.

(report generated 04.Okt.2007)