Erysiphe polygoni
DC.
KW [Darwin] 12261. Place of collection: Ukraine; Luhansk Oblast; Kreminna District; Kreminna town (N49°02' E38°13'). Date of collection: 16 June 1977. Associated organism: Polygonum patulum (leaf). Collector: Heluta, V.P.. Identifier: Heluta, V.P..