Erysiphe polygoni
DC.
KW [Darwin] 12252. Place of collection: Ukraine; Kyiv Oblast; Kiev city; Central Botanic Garden (N50°25' E30°32'). Date of collection: 14 September 1976. Associated organism: Polygonum patulum (leaf). Collector: Peregon; Potayenko. Identifier: Heluta, V.P..