Erysiphe knautiae
Duby
KW [Darwin] 11327. Place of collection: Ukraine; Luhansk Oblast; Milove District; Striletskyi Steppe reserve (N49°14' E40°05'). Date of collection: 17 June 1977. Associated organism: Knautia arvensis (leaf). Collector: Heluta, V.P.. Identifier: Heluta, V.P..