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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: 8. Absconditella. Stictidaceae Fr. (1849); Ostropales.

Taxonomic Literature: Clauzade G. & Roux C., Bull. Soc. Bot. Centre-Ouest N.S. - Numero Special 7: 1-893 [125] (1985); Coppins B.J. in: Purvis O.W. et al. (eds), The Lichen Flora of Great Britain and Ireland, London (1992); Döbbeler P. & Poelt J., Herzogia 4: 363-366 (1977); Kilias H., Herzogia 5: 209-448 (1981); Poelt J. & Vezda A., Biblioth. Lichenol. 9: 1-258 [1-2] (1977); Vezda A. & Pisut I., Nova Hedwigia 4: 341-346 (1984).

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

Ecology: Biotroph; lichenized; terricolous, bryophytic, or lignicolous; substrate non-calciferous.

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

Thallus: Crustose, not subdivided parts. Upper Surface: 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, not emerging, becoming adnate to soon sessile. Margin: Distinct to prominent. Exciple: White. Periphyses: Absent. Epithecium: Apical cells hyaline. Interascal Hyphae: Present, scarcely branched, not or scarcely anastomosed. Hypothecium: White.

Ascospores: c. 8 per ascus, ellipsoid, filiform, or fusiform, 8-50 µm long, 1.5-6.5 µm wide, obtuse or aciculate; septa present; transversally septate, 1-9-transversally septate; wall thin, not thickened at the septum, hyaline, in Lugol's Solution negative, wall not ornamented.

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