Erysiphe polygoni
DC.
KW [Darwin] 51096. Place of collection: Ukraine; Kherson Oblast; Henichesk District; Sokolohirne village (N46°30' E34°56'). Date of collection: 26 July 1933. Associated organism: Polygonum sp. (leaf). Collector: Pilipenko. Identifier: Heluta, V.P..