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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. (06-03-23); revised.

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

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

Taxonomic Literature: Taxonomic notes: +ascocarp outer wall cells irregularly polygonal, 7.5-21.5 µm diam.;. Braun U., Beih. Nova Hedwigia 89: 1-700 [226] (1987).

Biogeography: Continent: Asia-Temperate. Region(s): China (only known from the type collection).

Ecology: Biotroph; phytopathogenic; growing on leaves, hypophyllous. Host or Phorophyte Taxonomy: Coriaria sinica Maxim.; Coriaria, Coriariaceae.

Reproduction Strategy: With sexual (and possible asexual) stages. Ascocarps: Cleistothecioid, orbicular, forming independently from the host thallus or mycelium, scattered, (.07)-.082-.09-(.1) mm in diam.. Margin: External filaments present (strikingly different in length on the same ascocarp, uniform or subuniform in width, but attenuated at the apex); straight, 1-4-(5) µm long, (5)-6-7.5-(9.5) µm in diameter, pigmented (brown, paler upwards), few or numerous, 5-15 per mm², flexuose (or undulate), smooth or verrucose (below), thin, not ramified, septate.

Asci: 3-5 asci per ascocarp, not stipitate or indistinctly stipitate, 48-66-(74) µm long, 33-46-(51) µm wide; dehiscence unitunicate.

Ascospores: c. 4 to c. 8 per ascus, spores 3-5 per ascus, ellipsoid or ovoid, 20-28 µm long, 13-18 µm wide; septa absent.

Conidiophores: Pseudoidium-type. Conidium Formation: Conidiogenous cells single. Conidia: Sub-cylindrical; macroconidial, not branched, 30.5-44.5 µm long, 13-18 µm wide; aseptate.

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