Erysiphe polygoni
DC.
KW [Darwin] 12304. Place of collection: Ukraine; Kharkiv Oblast; Izium District; Kapytolivka village; Artemīvs’ke forestry (N49°11' E37°19'). Date of collection: 26 July 1977. Associated organism: Rumex acetosella (leaf, petiole). Collector: Heluta, V.P.. Identifier: Heluta, V.P..