Leptosphaeria Ces. & De Not. (1863)

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: 100. Leptosphaeria. Leptosphaeriaceae M.E. Barr (1987); Dothideales.

Type Information: Type: Leptosphaeria doliolum (Pers.: Fr.) Ces. & De Not.

Taxonomic Literature: Crane J.L. & Shearer C.A., Bull. Illinois Nat. Hist. Survey 34(3): 1-355 (1991); Diederich P., Mycotaxon 37: 297-330 [310-311] (1990); Eriksson O.E., The non-lichenized pyrenomycetes of Sweden. Lund: 1-208 [55-57] (1992); Hawksworth D.L., Trans. Brit. Mycol. Soc. 74: 363-386 [375-376] (1980); Holm L., Svensk Bot. Tidskr. 46: 18-46 (1952); Holm L., Symb. Bot. Upsal. 14(3): 1-188 [15-50] (1957); Keissler K. von, Rabenh. Kryptog.-Fl. 8: 1-712 [429-430] (1930) - sub Phaeospora ramalinae, [495-497] - sub Leptosphaeria pycnostigma; Müller E., Sydowia 4: 185-319 [197-198, 229-282, 287-288] (1950); Shoemaker R.A., Canad. J. Bot. 62: 2688-2729 (1985).

Biogeography: Checklist records: Austria and Great Britain.

Ecology: Biotroph or saprobic; fungicolous or lichenicolous; terricolous, lignicolous, corticolous, or epiphyllous.

Lichen Photobionts: Primary photobiont absent. Secondary photobiont absent.

Thallus: Indistinct.

Medulla: Iodine reaction in Lugol's solution negative.

Reproduction Strategy: Only known as sterile, asexually reproducing form or with sexual (and possible asexual) stages. Ascocarps: Perithecioid, orbicular, not emerging, becoming adnate to soon sessile. Wall: Not carbonized, not fused. Margin: Prominent; external filaments absent or present. Exciple: Black, brown, red, or violet. Periphyses: Absent or present. Interascal Hyphae: Present, scarcely branched, not or scarcely anastomosed. Hypothecium: Black, brown, red, or violet.

Asci: Dehiscence bitunicate.

Ascospores: 1–2 to c. 8 per ascus, ellipsoid, broadly ellipsoid, oblong, allantoid, clavate, curved, cylindrical, oblong-obtuse, or fusiform, 13-127 µm long, 2.5-15 µm wide, obtuse or aciculate; septa present; transversally septate, (1)-3-17-transversally septate; wall thin or 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.

Conidiomata: Absent resp. not observed or present; pycnidial; immersed or sessile.

Conidiogeneous Cells: Apical. Conidia: Bacilliform or filiform.

Secondary Metabolites: Not detected.

(report generated 04.Okt.2007)