Erysiphe polygoni
DC.
KW [Darwin] 11586. Place of collection: Ukraine; Chernihiv Oblast; Novhorod-Siverskyi District; Chulatīv village (N51°58' E33°20'). Date of collection: 6 August 1947. Associated organism: Polygonum aviculare (leaf). Collector: Morochkovsky, S.F.. Identifier: Heluta, V.P..