Oidium sp.

KW [Darwin] 50886. Place of collection: Ukraine; Kiev oblast; Kiev city; at the intersection of Tolstoho and Zhadanīvs’koho Streets (N50°26' E30°29'). Date of collection: 20 October 1983. Associated organism: Helianthus subcanescens (leaf). Collector: Heluta, V.P.. Identifier: Heluta, V.P..