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Data Set Maintenance: Data set standard item. Data set author(s): Rambold G. Data set reviewer(s): Triebel D. (01-12-19); not revised; to be published after submission.

Nomenclature: Current taxonomic status: accepted or basionymous. Taxonomic rank: genus. Number of known taxa within this rank: 11. Mycocalicium. Mycocaliciaceae A.F.W. Schmidt (1970); of unknown placement (incertae sedis).

Type Information: Type: Calicium parietinum Ach. (= Mycocalicium subtile (Pers.) Szatala).

Taxonomic Literature: Purvis O.W. in: Purvis O.W. et al. (eds), The Lichen Flora of Great
Britain and Ireland, London (1992); Tibell L., Beih. Nova Hedwigia
79: 597-713 (1984); Tibell L., Nord. J. Bot. 20: 717-742 (2001); Tibell L. & Titov A., Bryologist 98: 550-560 (1995).

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

Ecology: Saprobic or biotroph; lichenicolous; lignicolous; substrate non-calciferous.

Reproduction Strategy: Only known as sterile, asexually reproducing form or with sexual (and possible asexual) stages. Ascocarps: Apothecioid, orbicular, substipitate to stipitate. Margin: Prominent; external filaments absent. Exciple: Black or brown. Hymenium: Mazaedioid. Interascal Hyphae: Present, scarcely branched, not or scarcely anastomosed.

Ascospores: Ellipsoid or fusiform, 5.5-9 µm long, 2.5-4 µm wide; septa absent; wall thin, not thickened at the septum, dark brown, in Lugol's Solution negative, wall not ornamented or ornamented.

Secondary Metabolites: Not detected or present, of the following substance class(es): pulvinic acid derivatives.

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