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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. (06-01-25); revised.

Nomenclature: Current taxonomic status: accepted or basionymous. Taxonomic rank: species. Synonyms: Microsphaera multappendicis Z.Y. Zhao & Y.N. Yu; Erysiphaceae Tul. & C. Tul.; Erysiphales.

Type Information: Basionym: Microsphaera multappendicis Z. Y. Zhao & Y. N. Yu. Type: Microsphaera multappendicis Z. Y. Zhao & Y. N. Yu.

Taxonomic Literature: Taxonomic notes: +ascomata outer wall cells polygonal to rounded, ca. 8-20 µm diam.;. Braun U., Beih. Nova Hedwigia 89: 1-700 [363-364] (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 amurensis Rupr.; Berberis, Berberidaceae.

Reproduction Strategy: With sexual (and possible asexual) stages. Ascocarps: Cleistothecioid, orbicular, forming independently from the host thallus or mycelium, (.065)-.075-.11-(.115) mm in diam.. Margin: External filaments present; mycelioid or setiform (intermediary), recurved (tips of the ultimate branchlets recurved when fully mature, at least partly recurved), (1)-1.5-2.5-(3) µm long, 7-12 µm in diameter, pigmented (basal part usually brown), numerous, 8-35 per mm², growing between the lower and upper hald of the ascocarp, stiff and straight (rather), rough, thin or thick (throughout or thin above and thick below), ramified, dichotomously branched (4-6 times, branchings rather loose, primary branches mostly elongated, apical branchings sometimes close and regular, tips recurved when fully mature, at least partly recurved, stalk often deeply celft), aseptate or septate (0-2-, sometimes 3-septate).

Asci: 3-9 asci per ascocarp, not stipitate or indistinctly stipitate, 50-70 µm long, 25-50 µm wide; dehiscence unitunicate.

Ascospores: c. 4 to c. 8 per ascus, spores 3-6 per ascus, ellipsoid or ovoid, 16-30 µm long, 8-15 µm wide; septa absent.

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