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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: 3. Sagenidium. Genus of unknown placement (incertae sedis); Arthoniales.

Taxonomic Literature: Follmann G., Bot. Jahrb. Syst. 96: 45-52 (1975); Galloway D.J., Flora of New Zealand Lichens: i-lxxiii, 1-662 [518-519], Wellington (1985); Henssen A., Renner B. & Vobis G., Lichenologist 11: 263-270 (1979); Kantvilas G., Lichenologist 28: 229-337 (1996).

Lichen Photobionts: Primary photobiont present; trentepohlioid. Primary photobiont taxonomy: Trentepohlia (A. Beck 22-05-97); Trentepohliaceae; Trentepohliales. Secondary photobiont absent.

Thallus: Crustose, not subdivided parts, leprose. Upper Surface: Grey, white, or 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 or directly at the thallus margin.

Ascospores: c. 8 per ascus, fusiform, 22-34 µm long, 3-8 µm wide; septa present; transversally septate, 5-7-transversally septate; wall thin, not thickened at the septum, hyaline, in Lugol's Solution negative, wall not ornamented.

Secondary Metabolites: Not detected or present, of the following substance class(es): dibenzofurans [and usnic acids].

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