Oidium
sp.
KW [Darwin] 52538. Place of collection: Ukraine; Donetsk oblast; Sloviansk district; Kreĭdova Flora reserve; Piskunīvka village (near) (N48°52' E37°51'). Date of collection: 27 June 1989. Associated organism: Jurinea sp. (leaf, stem, flower). Collector: Heluta, V.P.. Identifier: Heluta, V.P..