Erysiphe polygoni DC.

KW [Darwin] 53649. Place of collection: Ukraine; Ternopil Oblast; Kremenets District; Medobori Nature Reserve; Kremenets’ki Gori section; Dibrova settlement; Maslyatin hill (N50°08' E25°31'). Date of collection: 13 September 1994. Associated organism: Polygonum aviculare (leaf). Collector: Dudka, I.O.. Identifier: Kolomīyets’, Ī.V..