Erysiphe polygoni
DC.
KW [Darwin] 11483. Place of collection: Ukraine; Volynska Oblast; Ivanychi District; Movniki village (N50°39' E24°07'). Date of collection: 6 September 1984. Associated organism: Polygonum aviculare (leaf). Collector: Heluta, V.P.. Identifier: Heluta, V.P..