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Pleospora Rabenh. ex 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; 00-03-04); revised; to be published after submission.

Nomenclature: Current taxonomic status: accepted or basionymous. Taxonomic rank: genus. Number of known taxa within this rank: 50. Pleospora. Pleosporaceae Nitschke (1869); Dothideales.

Type Information: Type: P. herbarum (Fr.) Rabenh. ex Ces. & De Not.

Taxonomic Literature: Taxonomic notes: Pleospora aquatica Tretiach & Nimis should be excluded from the genus. Crivelli P.G., Ueber die heterogene Ascomycetengattung Pleospora Rabenh.; Vorschlag für eine Aufteilung, Diss. ETH Zürich: 1-213 [1-109] (1983); Etayo J., Candollea 49: 245-249 (1994); Eriksson O., Ark. Bot. 6: 339-379 [339-379 [339-340, 355-373] (1967); Hawksworth D.L., Kew Bull. 30: 183-203 [196-197] (1975); Holm H. & Holm L., Biblioth. Mycol. 150: 53-62 (1993); Keissler K. von, Rabenh. Kryptog.-Fl. 8: 1-712 [512-513] (1930); Nograsek A., Biblioth. Mycol. 133: 1-271 [190-215] (1990); Scheuer C., Biblioth. Mycol. 123: 1-274 [158-163] (1988); Tretiach M. & Nimis P. L., Cryptog. Mycol. 20(4): 283-289 (1999); Weymeyer L.E., A world monograph of the genus Pleospora and its segregates, The University of Michigan Press, Ann. Arbor.: 1-451 (1961); Zukal H., Verh. K. K. Zool.-Bot. Ges. Wien 37: 39-46 (1887).

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

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

Lichen Photobionts: Primary photobiont absent. Secondary photobiont absent.

Thallus: Indistinct.

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, stromatic. Margin: External filaments absent or present. Exciple: Black, brown, red, olive, or brownish yellow. Periphyses: Absent or present. Interascal Hyphae: Absent or present, scarcely branched, not or scarcely anastomosed. Hypothecium: Brown, red, olive, or brownish yellow.

Asci: Tholus thickened, not amyloid; dehiscence bitunicate.

Ascospores: c. 4 to c. 8 per ascus, broadly ellipsoid, ellipsoid, cylindrical, ovoid, oblong, curved, or fusiform, 13-135 µm long, 4-27 µm wide, obtuse or aciculate; septa present; both transversally and longitudinally, 3-19-transversally septate; wall thin or thick, distinctly differentiated into primary and secondary wall, 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; immersed.

Conidiogeneous Cells: Apical. Conidia: Globose, fusiform, or bacilliform.

Secondary Metabolites: Not detected.

(report generated 04.Okt.2007)

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