Erysiphe polygoni
DC.
KW [Darwin] 51581. Place of collection: Ukraine; Zhytomyr Oblast; Ovruch District; Hladkovychi village (N51°20' E28°51'). Date of collection: 4 August 1946. Associated organism: Rumex acetosella (leaf). Collector: Radzīyevs’kiĭ, H.. Identifier: Heluta, V.P..