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Erysiphe castaneigena U. Braun & Cunnington [2000180]

Data Set Maintenance: Data set compiled and standard item. Data set author(s): Kainz C. (00-07-26). Data set reviewer(s): Schubert K. (06-03-27); revised.

Nomenclature: Current taxonomic status: accepted or basionymous. Taxonomic rank: species. Synonyms: Erysiphe sinensis (Y. N. Yu) U. Braun & Cunnington; Erysiphaceae Tul. & C. Tul.; Erysiphales.

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

Taxonomic Literature: Taxonomic notes: +ascomata outer wall cells polygonal, ca. 7.5-17.5 µm diam;. Braun U., Beih. Nova Hedwigia 89: 1-700 [390] (1987).

Biogeography: Continent: Asia-Temperate. Region(s): China (endemic, but fairly common).

Ecology: Biotroph; phytopathogenic; growing on leaves, epiphyllous (usually) or amphigenous. Host or Phorophyte Taxonomy: Castanea bungeana Blume; Castanea, Fagaceae.

Reproduction Strategy: With sexual (and possible asexual) stages. Ascocarps: Cleistothecioid, orbicular, forming independently from the host thallus or mycelium, .07-.115 mm in diam.. Margin: External filaments present; recurved, (.7)-.8-1.1-(1.6) µm long, 7.5 µm in diameter, hyaline or pigmented (at the very base), few, (4)-5-10-(13) per mm², smooth or rough, thin, moderatly thick (throughout, or thin-walled above and thick-walled towards the base), or thick, ramified, dichotomously branched ((3-)4-5(-7) times, branchings close and regular, tips recurved), aseptate or septate (a single septum at the base).

Asci: (2)-3-4-(6) asci per ascocarp, not stipitate or indistinctly stipitate, 43-63 µm long, 34-54 µm wide; dehiscence unitunicate.

Ascospores: c. 8 per ascus, spores 7-8 per ascus, ellipsoid or ovoid, 12.5-23.8 µm long, 8.4-15 µm wide; septa absent.

(report generated 04.Okt.2007)

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