Erysiphe polygoni
DC.
KW [Darwin] 11570. Place of collection: Ukraine; Kharkiv Oblast; Chuhuïv District; Kochetok settlement (N49°53' E36°44'). Date of collection: 25 August 1985. Associated organism: Polygonum aviculare (leaf). Collector: Heluta, V.P.. Identifier: Heluta, V.P..