Erysiphe polygoni
DC.
KW [Darwin] 11520. Place of collection: Ukraine; Kyiv Oblast; Kiev city; Fomin Botanic Garden (N50°27' E30°30'). Date of collection: 23 July 1957. Associated organism: Polygonum aviculare (leaf). Collector: Morochkovska, G.S.. Identifier: Heluta, V.P..