Erysiphe polygoni
DC.
KW [Darwin] 11546. Place of collection: Ukraine; Luhansk Oblast; Sverdlovsk District; Chervonopartysansk (N48°04' E39°47'). Date of collection: 18 June 1977. Associated organism: Polygonum aviculare (leaf). Collector: Heluta, V.P.. Identifier: Heluta, V.P..