Trichosphaeria Fuckel (1870)

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 or basionymous. Taxonomic rank: genus. Number of known taxa within this rank: 25. Trichosphaeria. Trichosphaeriaceae G. Winter (1885); Trichosphaeriales.

Type Information: Type: Trichosphaeria pilosa (Pers.) Fuckel.

Taxonomic Literature: Arx A.J. von & Müller E., Beitr. Kryptogamenfl. Schweiz 11(1): 1-434 [268-270] (1954); Hawksworth D.L., Trans. Brit. Mycol. Soc. 74: 363-386 [365] (1980); Karsten P.A. & Hariot P., Revue Mycol. 12: 169-173 (1890); Keissler K. von, Rabenh. Kryptog.-Fl. 8: 1-712 [327] (1930).

Biogeography: Checklist records: Great Britain and Sweden and Norway.

Ecology: Biotroph or saprobic; lichenicolous; terricolous or lignicolous.

Lichen Photobionts: Primary photobiont absent. Secondary photobiont absent.

Thallus: Indistinct.

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. Margin: External filaments present. Exciple: Black or brown. Periphyses: Present. Hymenium: Iodine reaction: Lugol’s negative, not hemiamyloid. Interascal Hyphae: Present, scarcely branched, not or scarcely anastomosed. Hypothecium: Black or brown.

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

Ascospores: c. 8 per ascus, ellipsoid or fusiform, 6-9 µm long, 2-4 µm wide, obtuse or aciculate; septa absent or present; transversally septate, 1-1-transversally septate; wall thin, not thickened at the septum, hyaline, in Lugol's Solution negative, wall not ornamented.

Conidiomata: Absent resp. not observed or present.

Secondary Metabolites: Not detected.

(report generated 04.Okt.2007)