Nectria (Fr.) Fr. (1849)

Data Set Maintenance: Data set standard item. Data set author(s): Triebel D. Data set reviewer(s): Triebel D. (99-02-12; 00-08-12); revised; to be published after submission.

Nomenclature: Current taxonomic status: accepted or basionymous. Taxonomic rank: genus. Number of known taxa within this rank: 200. Nectria. Synonyms: Lasionectria (Sacc.) Cooke; Hypocreaceae De Not. (1844); Hypocreales.

Type Information: Type: Nectria cinnabarina (Tode: Fr.) Fr.

Taxonomic Literature: Taxonomic notes: N. indigens and N. lecanodes were transfered to Nectriopsis, N.
rubefaciens to Trichonectria by Serusiaux et al.(1999) and after that to Nectriopsis rubefaciens by Cole & Hawksworth (2001). Alstrup V., Biologia (Bratislava) 51: 13-14 (1996); Alstrup V. &
Svane S., Graphis Scripta 9: 23-25 (1998); Booth C., Mycol. Pap. 73:
1-115 [100-105] (1959); Aptroot A., Diederich P., Sérusiaux E.
& Sipman H.J.M., Biblioth. Lichenol. 64: 1-220 [112] (1997);
Diederich P., Trav. Sci. Mus. Hist. Nat. Luxembourg 14: 1-268 [168-
169] (1989); Diederich P. & Puntillo D., Bull. Soc. Naturalistes
Luxemb. 96: 95-98 (1995); Döbbeler P., Nova Hedwigia 66: 326-373
[354-362] (1998); Döbbeler P. & Carranza J., Rev. Biol.
Trop. 41(2): 203-208 (1993); Etayo J., Nova Hedwigia 67(3-4): 499-509
(1998); Hawksworth D.L., Nova Hedwigia 35: 755-763 (1983); Hawksworth
D.L., Notes Roy. Bot. Gard. Edinburgh 43: 497-519 [501-503] (1986);
Hawksworth D.L. & Booth C., Mycologia 68: 195-200 (1976);
Keissler K. von, Rabenh. Kryptog.-Fl. 8: 1-712 [275-279] (1930);
Lowen R., Mycotaxon 53: 81-95 (1995); Molitor F. & Diederich P.,
Bull. Soc. Naturalistes Luxemb. 98: 69-92 [76-77] (1997); Rossman
A.Y., Mycol. Pap. 150: 1-64 [14-19, 55-60, 74-75] (1983); Rossman
A.Y., Samuels G.J., Rogerson C.T. & Lowen R., Genera of the
Hypocreales: 1-7 (1993) - [unpublished manuscript presented at the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] (1999).

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

Ecology: Saprobic or biotroph; lichenicolous or fungicolous; terricolous, bryophytic, lignicolous, corticolous, or epiphyllous; substrate non-calciferous or calciferous.

Lichen Photobionts: Primary photobiont absent. Secondary photobiont absent.

Thallus: Indistinct, not subdivided parts, filamentose. 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, forming all across the thallus surface, becoming adnate to soon sessile, stromatic. Margin: External filaments absent or present. Exciple: Yellow, brown, red, white, brownish yellow, orange, or pink (rosé). Periphyses: Present. Hymenium: Iodine reaction: Lugol’s negative, not hemiamyloid. Interascal Hyphae: Absent or present, scarcely branched, not or scarcely anastomosed. Hypothecium: Yellow, brown, red, white, brownish yellow, orange, or pink (rosé).

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

Ascospores: c. 4 to c. 8 per ascus, globose, broadly ellipsoid, ellipsoid, fusiform, filiform, cylindrical, oblong-obtuse, ovoid, clavate, oblong, or curved, 4-240 µm long, 2-25 µm wide, obtuse or aciculate; septa present; transversally septate or both transversally and longitudinally, 1-17-transversally septate, formed by the proper spore wall; wall thin, not thickened at the septum, dark brown, hyaline, or pale brown, in Lugol's Solution negative, wall not ornamented or ornamented.

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

Conidiogeneous Cells: Apical. Conidia: Globose or bacilliform.

Secondary Metabolites: Not detected.

(report generated 04.Okt.2007)