Erysiphe polygoni DC.

KW [Darwin] 11499. Place of collection: Ukraine; Donetsk Oblast; Sloviansk District; Slovianohirsk town; Sīvers’kiĭ Donets’ river (side, left) (N49°03' E37°35'). Date of collection: 23 July 1986. Associated organism: Polygonum aviculare (leaf). Collector: Heluta, V.P.. Identifier: Heluta, V.P..