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Data Set Maintenance: Data set standard item. Data set author(s): Triebel D. Data set reviewer(s): Triebel D. (98-01-01); revised; to be published after submission.

Nomenclature: Current taxonomic status: basionymous or accepted. Taxonomic rank: genus. Number of known taxa within this rank: 1. Discocera. Genus of unknown placement (incertae sedis); Verrucariales.

Taxonomic Literature: Hawksworth D.L., Notes Roy. Bot. Gard. Edinburgh 36: 181-197 (1978); Rambold G. & Triebel D., Notes Roy. Bot. Gard. Edinburgh 46: 375-389 (1990); Smith A.L. & Ramsbottom J., Trans. Brit. Mycol. Soc. 6: 47-53 (1917).

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

Thallus: Indistinct or crustose, not subdivided parts. Upper Surface: White; special structures absent. Lower Surface: Attached by the whole lower surface; special structures absent.

Medulla: Iodine reaction in Lugol's solution negative; not different with or without KOH pre-treatment (euamyloid).

Reproduction Strategy: Only known as sterile, asexually reproducing form or with sexual (and possible asexual) stages. Ascocarps: Apothecioid or perithecioid, orbicular, not emerging. Margin: External filaments absent. Exciple: Brownish yellow. Periphyses: Present. Hymenium: Iodine reaction: Lugol’s negative, hemiamyloid. Interascal Hyphae: Present, distinctly branched, not or scarcely anastomosed. Hypothecium: White or brownish yellow.

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

Ascospores: c. 8 per ascus, ellipsoid, 15-26 µm long, 8-13 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.

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