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Data Set Maintenance: Data set standard item. Data set author(s): Rambold G. Data set reviewer(s): Döring H. (95-06-02, 00-02-21); revised; to be published after submission.

Nomenclature: Current taxonomic status: accepted or basionymous. Taxonomic rank: genus. Number of known taxa within this rank: 2. Heterodea. Cladoniaceae Zenker (1827); Cladoniineae; Lecanorales.

Taxonomic Literature: Filson R., Lichenologist 10: 13-25 (1978); Galloway D.J., New Zealand J. Bot. 16: 261-270 (1978); Galloway D.J., Flora of New Zealand Lichens: i-lxxiii, 1-662 [181-182], Wellington (1985).

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

Thallus: Foliose, not subdivided parts, lobed. Thallus Outline: Soon disappearing. Upper Surface: Green, yellow, brown, olive, or brownish yellow; special structures absent. Lower Surface: Attached by holdfasts; special structures present:; not pseudocyphellate; not cyphellate; 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, soon sessile to substipitate. Margin: Distinct to 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.

Ascospores: c. 8 per ascus, ellipsoid, 10-15 µm long, 4-5 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; sessile to stipitate, formed along the thallus periphery.

Secondary Metabolites: Present, of the following substance class(es): orcinol depsides, ß-orcinol depsides, and dibenzofurans [and usnic acids].

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