Erysiphe cruciferarum
Opiz ex L. Junell
KW [Darwin] 51425. Place of collection: Ukraine; Republic of Crimea; Lenino District; Mar’ïvka village; Opuk mountain (N45°02' E36°13'). Date of collection: 11 May 1990. Associated organism: Alyssum sp. (leaf). Collector: Burdyukova, L.I.. Identifier: Heluta, V.P..