Erysiphe polygoni
DC.
KW [Darwin] 11545. Place of collection: Ukraine; Luhansk Oblast; Sverdlovsk District; Proval’s’kiĭ Steppe reserve (N48°0x' E39°5x'). Date of collection: 18 June 1977. Associated organism: Polygonum aviculare (leaf). Collector: Heluta, V.P.. Identifier: Heluta, V.P..