Erysiphe polygoni
DC.
KW [Darwin] 11553. Place of collection: Ukraine; Odesa Oblast; Balta District; Lisnychivka forest (N48°00' E29°32'). Date of collection: 27 June 1978. Associated organism: Polygonum aviculare (leaf). Collector: Heluta, V.P.. Identifier: Heluta, V.P..