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Data Set Maintenance: Data set standard item. Data set author(s): Triebel D. Data set reviewer(s): Triebel D. (00-03-08; 01-08-12); not revised; to be published after submission.

Nomenclature: Current taxonomic status: accepted or basionymous. Taxonomic rank: genus. Number of known taxa within this rank: 45. Nectriopsis. Bionectriaceae Samuels & Rossman (1999); Hypocreales.

Taxonomic Literature: Taxonomic notes: lichenicolous species: N. cladoniicola M.S.Cole & D.Hawksw., N. indigens (Arnold) Diederich & Schroers, N. lecanodes (Ces.) Diederich & Schroers, N. micareae Diederich, van den Boom & Ernst, N. parmeliae (Berk. & M.A.Curtis) M.S.Cole & D.Hawksw. Cole & Hawksworth (2001) also included N. rubefaciens (Ellis & Everh.) M.S.Cole & D.Hawksw. Alstrup V., Biologia (Bratislava) 51: 13-14 (1996); Aptroot A.,
Diederich P., Sérusiaux E. & Sipman H.J.M., Biblioth.
Lichenol. 62: 1-220 [112-115] (1997); Cole M.S. & Hawksworth D.L., Mycotaxon 77: 305-338 [320-322] (2001); Matzer M., Mycol. Pap. 171: 1-202 [181] (1996); Rossman A.Y., Samuels G.J., Rogerson C.T. &
Lowen R., Genera of the Hypocreales: 1-7. Paris (1993); Samuels G.J.,
Mem. New York Bot. Gard. 48: 1-77 [24-73] (1988) - [unpublished
manuscript presented at the First International Workshop on
Ascomycete Systematics, Paris]; Serusiaux E., Diederich P., Brand A.
M. & Van den Boom P., Lejeunia 162: 1-95 [55-58] (1999).

Biogeography: Checklist records: Germany, Great Britain, New Guinea, and United States and Canada (continental).

Ecology: Saprobic or biotroph; lichenicolous or fungicolous; terricolous, lignicolous, corticolous, or epiphyllous.

Reproduction Strategy: Only known as sterile, asexually reproducing form or with sexual (and possible asexual) stages. Ascocarps: Perithecioid, orbicular, forming all across the thallus surface, not emerging, becoming adnate to soon sessile, stromatic. Margin: External filaments absent or present. Exciple: Yellow, red, white, brownish yellow, or violet. Periphyses: Present. Hymenium: Iodine reaction: Lugol’s negative, not hemiamyloid. Interascal Hyphae: Absent. Hypothecium: Yellow, red, white, brownish yellow, orange, or violet.

Ascospores: c. 4 to c. 8 per ascus, broadly ellipsoid, ellipsoid, fusiform, filiform, oblong-obtuse, or oblong, 4-29 µm long, 1.5-13 µm wide, obtuse or aciculate; septa present; transversally septate, 1-3-transversally septate; wall thin, not thickened at the septum, hyaline or pale brown, in Lugol's Solution negative, wall not ornamented or ornamented.

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