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Data Set Maintenance: Data set compiled and standard item. Data set author(s): Kainz C. Data set reviewer(s): Schubert K. (06-05-17); revised.

Nomenclature: Current taxonomic status: accepted. Taxonomic rank: species. Synonyms: Sphaerotheca phaseoli (Z. Y. Zhao) U. Braun; Erysiphaceae Tul. & C. Tul.; Erysiphales.

Taxonomic Literature: Taxonomic notes: +ascoc. outer wall cells irregularly polygonal, about 10-35 µm diam.;. Braun U., Beih. Nova Hedwigia 89: 1-700 [137] (1987).

Biogeography: Continent: Asia-Temperate, Australasia, and Asia-Tropical. Region(s): China. Country or state(s): Japan and Korea (North & South); India and Burma (= Myanmar).

Ecology: Biotroph; phytopathogenic; growing on stems, leaves, or inflorescences, amphigenous. Host or Phorophyte Taxonomy: Phaseolus sp.; Phaseolus, Leguminosae-Papilionoideae.

Reproduction Strategy: With sexual (and possible asexual) stages. Ascocarps: Cleistothecioid, orbicular, forming independently from the host thallus or mycelium, scattered, .065-.1 mm in diam.. Margin: External filaments present; mycelioid, straight, .7-2.8 µm long, (3)-7-10 µm in diameter, pigmented (thoughout when mature or paler upwards), few, 5-7 per mm², flexuose, not ramified, aseptate or septate (up to 5(-7) septa).

Asci: 1 asci per ascocarp, not stipitate, 60-80 µm long, 50-65 µm wide; dehiscence unitunicate.

Ascospores: c. 8 per ascus, spores 6-8 per ascus, subglobose (seldom), ellipsoid, or ovoid, 15-19 µm long, 9-15 µm wide; septa absent.

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