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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: 1. Sarcosagium. Thelocarpaceae Zukal (1893); family of unknown placement (incertae sedis); Lecanorales.

Taxonomic Literature: Hafellner J., Crypt. Bot. 5: 99-104 (1995); Poelt J. & Vezda A., Biblioth. Lichenol. 9: 1-258 [237] (1977); Purvis O.W. in: Purvis O.W. et al. (eds), The Lichen Flora of Great Britain and Ireland, London (1992).

Biogeography: Checklist records: Austria, Germany, Great Britain, Italy, Sweden and Norway, and United States and Canada (continental).

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

Thallus: Crustose, not subdivided parts, granular. Upper Surface: Black, brown, green, grey, or olive; 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, soon sessile. Margin: Prominent; external filaments absent. Exciple: White or brownish yellow. Periphyses: Absent. Epithecium: Apical cells hyaline or brownish yellow. Interascal Hyphae: Present, scarcely branched, not or scarcely anastomosed. Hypothecium: White or brownish yellow.

Ascospores: More than 32 per ascus, ellipsoid or oblong, 5-13 µm long, 2-3.5 µm wide, obtuse; septa absent or present; transversally septate, 1-transversally septate; wall thin, not thickened at the septum, hyaline, in Lugol's Solution negative, wall not ornamented.

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