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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. (06-03-22); revised.

Nomenclature: Current taxonomic status: accepted or basionymous. Taxonomic rank: species. Synonyms: Microsphaera berberidicola F. L. Tai; Erysiphaceae Tul. & C. Tul.; Erysiphales.

Type Information: Basionym: Microsphaera berberidicola F. L. Tai. Type: Microsphaera berberidicola F. L. Tai.

Taxonomic Literature: Taxonomic notes: +ascomata outer wall cells irregularly polygonal, inconspicuous, ca. 8-15 µm diam.;. Braun U., Beih. Nova Hedwigia 89: 1-700 [364-365] (1987).

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

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

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-.11 mm in diam.. Margin: External filaments present; recurved (tips recurved, at least partly) or straight, (1)-1.5-2.5-(3) µm long, 6-8 µm in diameter, hyaline or pigmented (brown at the very base), few or numerous, 4-16 per mm², growing between the lower and upper hald of the ascocarp, flexuose, thin, moderatly thick (throughout or thick-walled below and thin-walled above), or thick, ramified, dichotomously branched (3-4(-6) times, primary branches often elongated, often somewhat recurved, the other branches short or the entire apex closely branched, compact, appendages sometimes deeply celft, forked near the base), aseptate or septate (0-1-septate).

Asci: 3-7 asci per ascocarp, not stipitate or indistinctly stipitate, 45-60 µm long, 35-40 µm wide; dehiscence unitunicate.

Ascospores: c. 4 to c. 8 per ascus, spores 4-6 per ascus, ellipsoid or ovoid, 12-23 µm long, 8-12 µm wide; septa absent.

Conidiophores: Pseudoidium-type; not branched. Conidium Formation: Conidiogenous cells single. Conidia: Ellipsoid or cylindrical; macroconidial, not branched, 30 µm long, 14 µm wide; aseptate.

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