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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. (06-03-24); revised.

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

Type Information: Basionym: Erysiphe malloti Z. X. Chen & R. X. Gao. Type: Erysiphe malloti Z. X. Chen & R. X. Gao.

Taxonomic Literature: Taxonomic notes: +ascocarp outer wall cells irregularly polygonal, ca. 7-25 µm diam.;. Braun U., Beih. Nova Hedwigia 89: 1-700 [191-192] (1987).

Biogeography: Continent: Asia-Temperate. Region(s): China. Country or state(s): Japan.

Ecology: Biotroph; phytopathogenic; growing on leaves, amphigenous. Host or Phorophyte Taxonomy: Mallotus lianus Croizat; Mallotus, Euphorbiaceae.

Reproduction Strategy: With sexual (and possible asexual) stages. Ascocarps: Cleistothecioid, orbicular, forming independently from the host thallus or mycelium, scattered or in loose groups, .07-.1 mm in diam.. Margin: External filaments present; mycelioid, straight, .5-7 µm long, 3.5-7.5 µm in diameter, pigmented (brown below, paler upwards), numerous, 7-26 per mm², growing all across the lower half of the ascocarp, verrucose, thin, not ramified or ramified, not branched (rarely irregularly branched) or irregular, septate.

Asci: (2)-3-5 asci per ascocarp, indistinctly stipitate, 40-65 µm long, 28-50 µm wide; dehiscence unitunicate.

Ascospores: 1–2 to c. 4 per ascus, spores (2)-3-5 per ascus, ellipsoid or ovoid, 17-22 µm long, 8-14 µm wide; septa absent.

Conidiophores: Pseudoidium-type; not branched. Conidium Formation: Conidiogenous cells single. Conidia: Ellipsoid or ovoid; macroconidial, not branched, (27)-30-53 µm long, 16-24 µm wide; aseptate.

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