Erysiphe polygoni
DC.
KW [Darwin] 11568. Place of collection: Ukraine; Kharkiv Oblast; Kupiansk District; Senkivka village (N49°32' E37°41'). Date of collection: 24 August 1985. Associated organism: Polygonum aviculare (leaf). Collector: Heluta, V.P.. Identifier: Heluta, V.P..