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Erysiphe menispermi var. sinomenii (Y. N. Yu) U. Braun & S. Takam.

Data Set Maintenance: Data set compiled and standard item. Data set author(s): Kainz C. (00-07-27). Data set reviewer(s): Schubert K. (06-03-24); revised.

Nomenclature: Current taxonomic status: accepted or basionymous. Taxonomic rank: variety. Synonyms: Microsphaera menispermi var. sinomenii (Y. N. Yu) U. Braun; Erysiphaceae Tul. & C. Tul.; Erysiphales.

Type Information: Basionym: Microsphaera sinomenii Y. N. Yu. Type: Microsphaera sinomenii Y. N. Yu.

Taxonomic Literature: Taxonomic notes: This variety differs from var. menispermi and var. dahurica by smaller ascocarps with fewer appendages. The apical branchings of var. dahurica are looser. Braun U., Beih. Nova Hedwigia 89: 1-700 [411-413] (1987).

Biogeography: Continent: Asia-Temperate. Region(s): China. Country or state(s): Japan.

Ecology: Biotroph; phytopathogenic; growing on leaves, epiphyllous (mostly) or amphigenous. Host or Phorophyte Taxonomy: Sinomenium acutum var. cinerascens Rehder & E. H. Wilson; Sinomenium, Menispermaceae.

Reproduction Strategy: With sexual (and possible asexual) stages. Ascocarps: Cleistothecioid, orbicular, forming independently from the host thallus or mycelium, scattered or in loose groups, .07-.115 mm in diam.. Margin: External filaments present; recurved, .8-1.5 µm long, hyaline or pigmented (brown at the base), few, (2)-4-11 per mm², growing between the lower and upper hald of the ascocarp, smooth, thin, moderatly thick (throughout or thin-walled above and thick-walled towards the base), or thick, ramified, dichotomously branched (4-7 times, branchings close and regular, primary branches short, tips recurved, not very close), septate.

Asci: 3-6 asci per ascocarp, not stipitate or indistinctly stipitate, 35-65 µm long, 30-55 µm wide; dehiscence unitunicate.

Ascospores: c. 4 to c. 8 per ascus, spores 4-7 per ascus, ellipsoid or ovoid, 18-27 µm long, 10-18 µm wide; septa absent.

Conidium Formation: Conidiogenous cells single. Conidia: Macroconidial.

(report generated 04.Okt.2007)

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