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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. Number of known taxa within this rank: 2. Flavocetraria. Parmeliaceae Zenker (1827); Lecanorineae; Lecanorales.

Type Information: Type: Flavocetraria cucullata (Bellardi) Kärnefelt & A. Thell.

Taxonomic Literature: Kärnefelt I., Thell A., Randlane T. & Saag A., Acta Bot. Fenn. 150: 79-86 (1994); Thell A., Randlane T., Kärnefelt I., Gao X.-Q. & Saag A., in: Daniels F.J.A., Schulz M. & Peine J. (eds): Flechten Follmann: 353-370, Cologne (1995).

Lichen Photobionts: Primary photobiont present; chlorococcal. Primary photobiont taxonomy: Trebouxia (A. Beck 22-05-97); Trebouxiaceae; Trebouxiales, Trebouxiophyceae, Eukariota. Secondary photobiont absent.

Thallus: Fruticose, not subdivided parts. Thallus Outline: Soon disappearing. Upper Surface: Brownish yellow or yellow; special structures absent or present:; pseudocyphellate; eciliate; without hairs; not isidate; not sorediate; not cephalodiate; not lobulate; without granules granules, without thalloconidia thalloconidia. Lower Surface: Attached by holdfasts; special structures absent or present:; pseudocyphellate; cyphellate; not rhizinate; without thalloconidia thalloconidia; not cavernulate; not tomentose.

Reproduction Strategy: Only known as sterile, asexually reproducing form or with sexual (and possible asexual) stages. Ascocarps: Apothecioid, orbicular, forming directly at the thallus margin, directly at the tip of the thallus parts, soon sessile. Margin: Prominent; external filaments absent. Exciple: White. Periphyses: Absent. Epithecium: Apical cells brown or brownish yellow. Interascal Hyphae: Present, scarcely branched, not or scarcely anastomosed. Hypothecium: White.

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

Ascospores: c. 8 per ascus, ellipsoid, 5-10 µm long, 3-5.5 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; formed along the thallus periphery.

Secondary Metabolites: Present, of the following substance class(es): (higher) aliphatic acids, (anthra-)quinones, and dibenzofurans [and usnic acids].

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