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Cetradonia J.-C. Wei & Ahti (2002)

Data Set Maintenance: Data set standard item. Data set author(s): Scholz P. Data set not revised; to be published after submission.

Nomenclature: Current taxonomic status: basionymous or accepted. Taxonomic rank: genus. Number of known taxa within this rank: 1. Synonyms: Cladonia linearis Evans; genus of unknown placement (incertae sedis) (Cetradoniaceae J.-C. Wei & Ahti (2002)); Cladoniineae; Lecanorales.

Type Information: Type: Cetradonia linearis (Evans) J.-C. Wei & Ahti.

Taxonomic Literature: Evans A., Bryologist 50: 46 (1947); Wei J.-C. & Ahti T., Lichenologist 34: 19-31 (2002).

Biogeography: Checklist records: United States and Canada (continental).

Ecology: Biotroph; lichenized; substrate non-calciferous.

Lichen Photobionts: Primary photobiont present. Primary photobiont taxonomy: Trebouxia; Trebouxiaceae; Trebouxiales, Trebouxiophyceae, Eukariota. Secondary photobiont absent.

Thallus: Fruticose. Thallus Outline: Persistent. Upper Surface: Greyish green or brownish yellow (pale); special structures absent; not pseudocyphellate; eciliate; without hairs; not isidate; not sorediate; not cephalodiate; not lobulate; without granules granules, without thalloconidia thalloconidia. Lower Surface: Special structures absent; not pseudocyphellate; not cyphellate; not rhizinate; without thalloconidia thalloconidia; not cavernulate; not tomentose.

Reproduction Strategy: With sexual (and possible asexual) stages. Ascocarps: Apothecioid, orbicular, forming all across the thallus surface, soon sessile. Wall: Not carbonized, not fused. Margin: Indistinct; external filaments absent. Periphyses: Absent. Epithecium: Apical cells brown. Interascal Hyphae: Present, scarcely branched, not or scarcely anastomosed. Hypothecium: White.

Asci: Dehiscence lecanoralean.

Ascospores: c. 8 per ascus, ellipsoid, obtuse; septa absent; wall thin, not thickened at the septum, not constricted where the septum meets the spore wall, hyaline, in Lugol's Solution negative, wall not ornamented.

Conidiomata: Present; pycnidial; sessile.

Secondary Metabolites: Present, of the following substance class(es): (higher) aliphatic acids or ß-orcinol depsides (atranorin).

(report generated 04.Okt.2007)


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