Erysiphe polygoni
DC.
KW [Darwin] 12299. Place of collection: Ukraine; Kyiv Oblast; Kiev city; Feofania suburb; experimental station of Kholodny Institute of Botany (N50°21' E30°29'). Date of collection: 8 August 1946. Associated organism: Rumex acetosella (leaf). Collector: Isaeva, O.V.. Identifier: Heluta, V.P..