Erysiphe polygoni
DC.
KW [Darwin] 11484. Place of collection: Ukraine; Volynska Oblast; Kovel District; Kovel’ town (N51°14' E24°42'). Date of collection: 7 September 1984. Associated organism: Polygonum aviculare (leaf). Collector: Heluta, V.P.. Identifier: Heluta, V.P..