Erysiphe cruciferarum
Opiz ex L. Junell
KW [Darwin] 11945. Place of collection: Ukraine; Vinnytsia oblast; Koziatyn town (N49°44' E28°40'). Date of collection: 1 October 1925. Associated organism: Sinapis arvensis (leaf, petiole, stem, fruit). Collector: Yakovlev, N.A.. Identifier: Heluta, V.P..