Oidium
sp.
KW [Darwin] 53907. Place of collection: Ukraine; Donetsk oblast; Novoazovsk district; Khomutovs’kii Steppe Nature Reserve, south part (N47°17' E38°11'). Date of collection: 22 September 1997. Associated organism: Filipendula vulgaris (leaf). Collector: Heluta, V.P.. Identifier: Heluta, V.P..