Erysiphe polygoni
DC.
KW [Darwin] 11506. Place of collection: Ukraine; Zaporizhzhia oblast; Kamianka-Dniprovska district; Kamianka-Dniprovska town (N47°2x' E34°2x'). Date of collection: 25 June 1953. Associated organism: Polygonum aviculare (leaf). Collector: Sokolova, M.D.. Identifier: Heluta, V.P..