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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. (06-01-26); revised.

Nomenclature: Current taxonomic status: accepted or basionymous. Taxonomic rank: species. Synonyms: Erysiphe adenophorae R. Y. Zheng & G. Q. Chen; Erysiphaceae Tul. & C. Tul.; Erysiphales.

Type Information: Basionym: Erysiphe adenophorae R. Y. Zheng & G. Q. Chen. Type: Erysiphe adenophorae R. Y. Zheng & G. Q. Chen.

Taxonomic Literature: Taxonomic notes: +ascocarp outer wall cells irregularly shaped, ca. 6-20 µm diam.;. Braun U., Beih. Nova Hedwigia 89: 1-700 [258-259] (1987); Braun U., The powdery mildews (Erysiphales) of Europe. - 1-337. Jena, Stuttgart, New York (1995).

Biogeography: Continent: Asia-Temperate and Europe. Region(s): East Europe, Far Eastern Asia, and China. Country or state(s): North-western Russia and Ukraine; Kazakhstan and Japan.

Ecology: Biotroph; phytopathogenic; growing on stems, leaves, or inflorescences, amphigenous. Host or Phorophyte Taxonomy: Adenophora tetraphylla Fisch.; Adenophora, Campanulaceae.

Reproduction Strategy: With sexual (and possible asexual) stages. Ascocarps: Cleistothecioid, orbicular, forming independently from the host thallus or mycelium, scattered or in loose groups, (.11)-.13-.15-(.17) mm in diam.. Margin: External filaments present (often somewhat attenuated upwards); interlaced with each other, mycelioid, straight, .25-1-(2) µm long, 4.5-9 µm in diameter, hyaline or pigmented (later, brown to deep brown), numerous, 10-40 per mm², growing all across the lower half of the ascocarp, smooth or rough, thin, not ramified or ramified (rarely), irregular, septate (0-3-septate).

Asci: 10-25-(29) asci per ascocarp, indistinctly stipitate (rarely) or distinctly stipitate (usually), (55)-55-70-(80) µm long, (20)-25-40-(45) µm wide; dehiscence unitunicate.

Ascospores: 1–2 to c. 4 per ascus, spores 2-(4) per ascus, broadly ellipsoid or ovoid, (15)-19-25-(28) µm long, (9)-13-16-(18) µm wide; septa absent; wall thin.

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