Erysiphe knautiae
Duby
KW [Darwin] 51527. Place of collection: Ukraine; Poltava Oblast; Dykan’ka District; Dykan’ka settlement; Parasots’kiĭ forest (N49°48' E34°35'). Date of collection: 21 May 1989. Associated organism: Knautia arvensis (leaf). Collector: Burdyukova, L.I.. Identifier: Heluta, V.P..