Oidium
sp.
KW [Darwin] 50835. Place of collection: Ukraine; Chernihiv oblast; Semenivka district; Semenivka town; Zamostya; Yakimenka kitchen garden (N52°10' E32°35'). Date of collection: 14 August 1948. Associated organism: Cucumis sativus (leaf). Collector: Morochkovsky, S.F.. Identifier: Heluta, V.P..