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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: Microsphaera sichuanica Y. N. Yu; Erysiphaceae Tul. & C. Tul.; Erysiphales.

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

Taxonomic Literature: Taxonomic notes: +ascomata outer wall cells irregularly angular, ca. 7.5-20 µm diam.;. Braun U., Beih. Nova Hedwigia 89: 1-700 [366] (1987).

Biogeography: Continent: Asia-Temperate. Region(s): China (only known from the type collection).

Ecology: Biotroph; phytopathogenic; growing on leaves, epiphyllous (mostly) or amphigenous. Host or Phorophyte Taxonomy: Berberis diaphana Maxim.; Berberis, Berberidaceae.

Reproduction Strategy: With sexual (and possible asexual) stages. Ascocarps: Cleistothecioid, orbicular, forming independently from the host thallus or mycelium, scattered or gregarious, .072-.115 mm in diam.. Margin: External filaments present (flaccid); recurved or straight (obtuse, truncate, digitate), (1.5)-2-3-(3.5) µm long, 7-10 µm in diameter, hyaline or pigmented (sometimes brown at the base), few or numerous, (5)-9-14-(20) per mm², growing between the lower and upper hald of the ascocarp, smooth, thin, ramified, dichotomously branched ((2-)4-5 times, regular and close or somewhat irregular, ultimate branchlets long or short, recurved or straight (obtuse, truncate, digitate)), aseptate or septate (0-1-septate).

Asci: (3)-4-7-(8) asci per ascocarp, not stipitate or indistinctly stipitate, 44-59 µm long, 31-44 µm wide; dehiscence unitunicate.

Ascospores: c. 4 to c. 8 per ascus, spores (3)-4-6-(8) per ascus, ellipsoid or ovoid, 16-20 µm long, 9-13 µm wide; septa absent.

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