Erysiphe cruciferarum
Opiz ex L. Junell
KW [Darwin] 51455. Place of collection: Ukraine; Republic of Crimea; Lenino district; Mar’ïvka village; Opuk mountain (base) (N45°02' E36°13'). Date of collection: 9 August 1989. Associated organism: Rapistrum sp. (leaf). Collector: Dudka, I.O.. Identifier: Heluta, V.P..