Erysiphe polygoni
DC.
KW [Darwin] 51562. Place of collection: Ukraine; Donetsk Oblast; Volnovakha District; Ol’hynka village; Veliko-Anadol’s’ke forestry (N47°40' E37°27'). Date of collection: 29 October 1949. Associated organism: Polygonum sp. (leaf). Collector: Kharkevich, H.S.. Identifier: Heluta, V.P..