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Data Set Maintenance: Data set standard item. Data set author(s): Rambold G. Data set reviewer(s): Scholz P. (02-05-13); revised; to be published after submission.

Nomenclature: Current taxonomic status: accepted or basionymous. Taxonomic rank: genus. Number of known taxa within this rank: 8. Baeomyces. Synonyms: Phyllobaeis Kalb & Gierl; Baeomycetaceae Dumort. (1829); Leotiales.

Taxonomic Literature: Aptroot A. & Sipman H.J.M., Willdenowia 20: 221-256 (1991); Gierl
C. & Kalb K., Herzogia 9: 593-645 (1993); James P.W. & Dalby
D.H. in: Purvis O.W. et al. (eds), The Lichen Flora of Great Britain
and Ireland, London (1992); Ryan B.D. in: Nash T.H. III et al. (eds), Lichen Flora of the Greater Sonoran Desert Region vol. 1: 106-107, Tempe (2002).

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

Lichen Photobionts: Primary photobiont present; chlorococcal. Primary photobiont taxonomy: Elliptochloris (A. Beck 22-05-97); genus incertae sedis; family of unknown placement (incertae sedis), Trebouxiophyceae, Eukariota. Secondary photobiont absent.

Thallus: Crustose, not subdivided parts, squamulose, placodioid, or granular. Upper Surface: Grey, brown, or olive; special structures absent or present:; not pseudocyphellate; eciliate; without hairs; not isidate; not sorediate or sorediate; not cephalodiate; not lobulate or 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, directly at the tip of the thallus parts, soon sessile to stipitate. Margin: External filaments absent. Exciple: Brownish yellow. Periphyses: Absent. Epithecium: Apical cells brownish yellow. Hymenium: Iodine reaction: Lugol’s negative, not hemiamyloid. Interascal Hyphae: Present, scarcely branched, not or scarcely anastomosed.

Asci: Tholus thickened, not amyloid; dehiscence unitunicate; exoascus not amyloid, not hemiamyloid.

Ascospores: c. 8 per ascus, ellipsoid, 8-14 µm long, 2-4 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.

Conidiomata: Absent resp. not observed or present; pycnidial; immersed, formed all accross the thallus surface.

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

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