Erysiphe polygoni
DC.
KW [Darwin] 51560. Place of collection: Ukraine; Donetsk Oblast; Sloviansk District; Piskunīvka village; Kreĭdova Flora reserve (N48°52' E37°51'). Date of collection: 27 June 1989. Associated organism: Polygonum patulum (leaf). Collector: Heluta, V.P.. Identifier: Heluta, V.P..