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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: accepted or basionymous. Taxonomic rank: genus. Number of known taxa within this rank: 8. Coccotrema. Coccotremataceae A. Henssen (1976); Pertusariineae; Lecanorales.

Taxonomic Literature: Brodo I., Bryologist 76: 260-270 (1973); Galloway D.J., Flora of New Zealand Lichens: i-lxxiii, 1-662 [129-130], Wellington (1985); Oshio M., J. Sci. Hiroshima Univ., Ser. B, Div. 2 (Bot.), 12: 81-163 (1968).

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

Lichen Photobionts: Primary photobiont present; chlorococcal and cyanobacterial. Primary photobiont taxonomy: Calothrix (A. Beck 22-05-97); Rivulariaceae; Chroococcales, Cyanobacteria, Prokaryota. Secondary photobiont present.

Thallus: Crustose, granular, rimose, or areolate (primarily areolate). Thallus Outline: Soon disappearing or persistent. Upper Surface: Grey, brownish yellow, or pink (rosé); special structures absent or present:; not pseudocyphellate; eciliate; without hairs; not isidate or isidiate; 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 or present:; not pseudocyphellate; not cyphellate; not rhizinate; without thalloconidia thalloconidia; not cavernulate; not tomentose.

Reproduction Strategy: Only known as sterile, asexually reproducing form or with sexual (and possible asexual) stages. Ascocarps: Apothecioid or perithecioid, orbicular, forming all across the thallus surface, not emerging, soon sessile. Margin: Prominent; external filaments absent. Exciple: White. Periphyses: Present. Interascal Hyphae: Present, scarcely branched to distinctly branched, not or scarcely anastomosed to distinctly anastomosed. Hypothecium: White.

Ascospores: c. 4 to c. 8 per ascus, ellipsoid, 42-70 µm long, 23-39 µm wide, obtuse; septa absent; wall thin or thick, distinctly differentiated into primary and secondary wall, not thickened at the septum, hyaline, pale brown, or dark brown, in Lugol's Solution negative, wall not ornamented.

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

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

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