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Data Set Maintenance: Data set compiled and standard item. Data set author(s): Schubert K. @EXCL@ Kainz C. (06-01-31).

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

Type Information: Basionym: Uncinula toxicodendricola Z. X. Chen & Y. J. Yao. Type: Uncinula toxicodendricola Z. X. Chen & Y. J. Yao.

Taxonomic Literature: Taxonomic notes: ascomata outer wall cells irregularly angular, 9-19 µm diam. Chen Z. X. & Yao Y. J., Wuyi Sci. J. 8: 157-161 (1991).

Ecology: Biotroph; phytopathogenic; growing on leaves, amphigenous. Host or Phorophyte Taxonomy: Toxicodendron succedaneum Kuntze; Toxicodendron, Anacardiaceae.

Reproduction Strategy: With sexual (and possible asexual) stages. Ascocarps: Cleistothecioid, orbicular (globose to globose-depressed), forming independently from the host thallus or mycelium, scattered, .09-.12 mm in diam.. Margin: External filaments present; mycelioid or setiform, uncinate (vel spiraliter arcte), (90)-130-140 µm long, 7-9 µm in diameter, hyaline or pigmented (raro basi subbrunneae), few, 3-5-(8) per mm², growing on the upper half of the ascocarp, smooth or verrucose (raro verruculosae prope basim), thin or moderatly thick, not ramified, aseptate or septate (aseptate vel prope basim 1-septatae).

Asci: 3-7 asci per ascocarp, globose (ovales, late ovales, ovato-oblongi, subglobosi), not stipitate or indistinctly stipitate, 49-62.5 µm long, 40-47.5 µm wide; dehiscence unitunicate.

Ascospores: c. 4 to c. 8 per ascus, spores (4)-7-8 per ascus, ellipsoid or ovoid, (13.5)-17.5-21.5 µm long, 8.5-12.5 µm wide; septa absent; wall remaining hyaline, hyaline.

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