Oidium sp.

KW [Darwin] 50891. Place of collection: Ukraine; Poltava oblast; Velyka Bahachka district; Velyka Bahachka settlement (N49°47' E33°43'). Date of collection: 16 August 1985. Associated organism: Hieracium fallax (leaf). Collector: Heluta, V.P.. Identifier: Heluta, V.P..