Erysiphe polygoni
DC.
KW [Darwin] 51575. Place of collection: Ukraine; Zaporizhzhia Oblast; Vasylivka District; Skelky village (N47°26' E35°07'). Date of collection: 11 September 1940. Associated organism: Rumex acetosa (leaf). Collector: Tsyatsyuk, S.. Identifier: Heluta, V.P..