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Data Set Maintenance: Data set standard item. Data set author(s): Scholz P. (02-05-18). Data set not revised; to be published after submission.

Nomenclature: Taxonomic rank: genus. Number of known taxa within this rank: 3. Synonyms: Hypocenomyce p. pt.; Lecanoraceae Körb. (1855); Lecanorineae; Lecanorales.

Taxonomic Literature: Hafellner J. & Türk R., Stapfia 76: 1-167 [157-158, 166] (2001); Purvis O.W. & James P.W. in: Purvis O.W. et al. (eds), The Lichen Flora of Great Britain and Ireland, London (1992) - sub Hypocenomyce; Timdal E., Nord. J. Bot. 4: 83-108 (1984) - sub Hypocenomyce.

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

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

Thallus: Crustose, areolate (primarily areolate). Upper Surface: Grey or yellowish brown; special structures absent or present:; not pseudocyphellate; eciliate; without hairs; not isidate; not sorediate or sorediate; not cephalodiate; not lobulate; without granules granules, without thalloconidia thalloconidia. 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, soon sessile. Margin: Distinct. Exciple: Black or brown. Epithecium: Apical cells green or blackish brown. Hymenium: Iodine reaction: Lugol’s negative, not hemiamyloid. Interascal Hyphae: Present, scarcely branched or distinctly branched (sparingly), not or scarcely anastomosed. Hypothecium: Brown.

Asci: Tholus amyloid, with non-amyloid wide axial body and divergent amyloid flanks towards apex; dehiscence lecanoralean; exoascus euamyloid, not hemiamyloid.

Ascospores: c. 8 per ascus, ellipsoid, 6-13 µm long, 2.5-7 µm wide, obtuse; septa absent; wall hyaline, in Lugol's Solution negative.

Conidiogeneous Cells: Apical. Conidia: Globose or ellipsoid; not branched; aseptate; cell wall hyaline.

Secondary Metabolites: Present, of the following substance class(es): ß-orcinol depsides.

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