Erysiphe polygoni
DC.
KW [Darwin] 11530. Place of collection: Ukraine; Kyiv Oblast; Kiev city; Central Botanic Garden (N50°25' E30°32'). Date of collection: 21 July 1947. Associated organism: Polygonum aviculare (leaf). Collector: Morochkovska, G.S.. Identifier: Heluta, V.P..