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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: accepted. Taxonomic rank: genus. Number of known taxa within this rank: 40. Melanopsamma. Niessliaceae Kirschst. (1939); Hypocreales.

Taxonomic Literature: Taxonomic notes: Anamorph: Stachybotrys asci with non-amyloid apical ring or without such ring. Barr M. E., Mycotaxon 39: 43-184 [116-118] (1990); Booth C., Mycol. Pap. 68: 1-27 [17-26] (1957); Eriksson O.E., The non-lichenized pyrenomycetes of Sweden, Lund: 1-208 [64] (1992); Keissler K. von, Rabenh. Kryptog.-Fl. 8: 1-712 [332-334] (1930); Munk A., Dansk Bot. Ark. 17: 1-491 [53-54] (1957); Niessl G. von., Verh. Naturf. Vereins Brünn 14: 165-217 [200] (1876) ["1875"]; Saccardo P.A., Michelia 1: 277-356 [347] (1878); Samuels G. & Barr M.E., Canad. J. Bot. 75: 2165-2176 (1997); Vouaux L., Bull. Trimestriel Soc. Mycol. France 28: 177 256 [209-210] (1912).

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

Ecology: Saprobic or biotroph (not really, but on decaying lichen thalli); algicolous or lichenicolous (not really, but on decaying lichen thalli); lignicolous; substrate non-calciferous.

Thallus: Indistinct, filamentose or granular. 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: Perithecioid, orbicular, soon sessile, stromatic. Margin: External filaments absent or present. Exciple: Black, brown, or red. Periphyses: Present. Hymenium: Iodine reaction: Lugol’s negative, not hemiamyloid. Interascal Hyphae: Absent or present, scarcely branched, not or scarcely anastomosed. Hypothecium: Black, brown, or red.

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

Ascospores: c. 4 to c. 8 per ascus, broadly ellipsoid, ellipsoid, or cylindrical, 7-22 µm long, (2.5)-3.5-8 µm wide, obtuse or aciculate; septa present; transversally septate, 1-transversally septate; wall thick, distinctly differentiated into primary and secondary wall, not thickened at the septum, dark brown, middle brown, grey, or hyaline, in Lugol's Solution negative, wall not ornamented or ornamented.

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