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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: 30. Lempholemma. Lichinaceae Nyl. (1854); Lichinales.

Taxonomic Literature: Clauzade G. & Roux C., Bull. Soc. Bot. Centre-Ouest N.S. - Numero Special 7: 1-893 [490-491] (1985); Coppins B.J., Gilbert O.L. & Jørgensen P.M. in: Purvis O.W. et al. (eds), The Lichen Flora of Great Britain and Ireland, London (1992); Galloway D.J., Flora of New Zealand Lichens: i-lxxiii, 1-662 [245], Wellington (1985); Henssen A., Ber. Deutsch. Bot. Ges. 81: 176-182 (1968).

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

Ecology: Biotroph; lichenized; terricolous or bryophytic; substrate calciferous.

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

Thallus: Crustose or foliose, not subdivided parts, squamulose or subfruticose, lobed. Upper Surface: Black or green; special structures absent or present:; not pseudocyphellate; eciliate; without hairs; not isidate; not sorediate; not cephalodiate; not lobulate; without granules or with 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, not emerging, becoming adnate to soon sessile. Margin: Prominent; external filaments absent. 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, broadly ellipsoid, or globose, 7-20 µm long, 5-20 µm wide, obtuse; septa absent; wall thin or thick, distinctly differentiated into primary and secondary wall, 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.

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