Oidium
sp.
KW [Darwin] 50926. Place of collection: Ukraine; Ternopil oblast; Ternopil district; Ostrīv village (N49°29' E25°35'). Date of collection: 26 June 1972. Associated organism: Prunella vulgaris (leaf). Collector: Dudka, I.O.. Identifier: Heluta, V.P..