Erysiphe polygoni
DC.
KW [Darwin] 53651. Place of collection: Ukraine; Ternopil Oblast; Pidvolochysk District; Ostap‘ye village; Gostra Mogila parcel (N49°23' E26°06'). Date of collection: 8 September 1994. Associated organism: Polygonum aviculare (leaf). Collector: Dudka, I.O.. Identifier: Kolomīyets’, Ī.V..