Erysiphe polygoni DC.

KW [Darwin] 12232. Place of collection: Ukraine; Zaporizhzhia oblast; Kuibysheve district; Novokamianka village; Kam‘yans’ka forest parcel (N47°15' E36°45'). Date of collection: 3 October 1973. Associated organism: Polygonum lapathifolium (leaf). Collector: Dudka, I.O.. Identifier: Heluta, V.P..