Erysiphe polygoni
DC.
KW [Darwin] 13535. Place of collection: Ukraine; Poltava Oblast; Mashivka District; Ust’-Lipianka village; Orīl’ river (side) (N49°11' E34°48'). Date of collection: 1 August 1994. Associated organism: Polygonum aviculare (leaf). Collector: Besedina, I.S.. Identifier: Heluta, V.P..