Erysiphe polygoni
DC.
KW [Darwin] 11579. Place of collection: Ukraine; Kherson Oblast; Chaplynka District; Askania Nova settlement (N46°27' E33°51'). Date of collection: 13 September 1977. Associated organism: Polygonum aviculare (leaf). Collector: Heluta, V.P.. Identifier: Heluta, V.P..