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Plagiostoma 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: basionymous or accepted. Taxonomic rank: genus. Number of known taxa within this rank: 15. Plagiostoma. Valsaceae Tul. & C. Tul. (1861); Diaporthales.

Type Information: Type: Plagiostoma euphorbiae (Fuckel) Fuckel.

Taxonomic Literature: Taxonomic notes: Anamorph: Cylindrosporella DC. ex Fr. Barr M.E., Mycol. Mem. 7: 1-232 [104-117] (1978); Monod M., Sydowia, Beih. 9: 1-315 [139-152] (1983).

Biogeography: Checklist records: Great Britain.

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

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, stromatic. Margin: External filaments absent. Exciple: Black, brown, brownish yellow, or red. Periphyses: Present. Interascal Hyphae: Absent. Hypothecium: Black, brown, brownish yellow, or red.

Asci: Tholus thickened, not amyloid; dehiscence unitunicate.

Ascospores: c. 8 per ascus, ellipsoid, oblong, fusiform, or oblong-obtuse, 6-52 µm long, 1-16 µm wide, obtuse or aciculate; septa present; transversally septate, 1-3-transversally septate; wall thin or thick, distinctly differentiated into primary and secondary wall, not thickened at the septum, hyaline or pale brown, in Lugol's Solution negative, wall not ornamented or ornamented.

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

Conidia: Bacilliform or filiform.

Secondary Metabolites: Not detected.

(report generated 04.Okt.2007)

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