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Data Set Maintenance: Data set compiled and standard item; reviewer(s): Schubert K. (06-03-27); revised.

Nomenclature: Current taxonomic status: accepted or basionymous. Taxonomic rank: species. Synonyms: Microsphaera seravschanica Korbonsk.; Erysiphaceae Tul. & C. Tul.; Erysiphales.

Type Information: Basionym: Microsphaera seravschanica Korbonsk. Type: Microsphaera seravschanica Korbonsk.

Biogeography: Continent: Asia-Temperate. Country or state(s): Tajikistan (only known from the type collection).

Ecology: Biotroph; phytopathogenic. Host or Phorophyte Taxonomy: Astragalus pterocephalus Bunge; Astragalus, Leguminosae-Papilionoideae.

Reproduction Strategy: With sexual (and possible asexual) stages. Ascocarps: Cleistothecioid (globose), orbicular (globose), forming independently from the host thallus or mycelium, .095-.13 mm in diam.. Margin: External filaments present (142-270 µm long); 142-270 µm long, 6 µm in diameter, hyaline, very numerous, 53-107 per mm², growing all across the lower half of the ascocarp or between the lower and upper hald of the ascocarp, ramified, dichotomously branched (3-4(-5) times, branchings loose, deep, diffuse, Microsphaera diffusa-like), septate.

Asci: 8-12 asci per ascocarp, 46-57 µm long, 19-30 µm wide; dehiscence unitunicate.

Ascospores: 1–2, c. 4, or c. 8 per ascus, spores 2-4-(8) per ascus; septa absent.

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