Erysiphe knautiae
Duby
KW [Darwin] 11320. Place of collection: Ukraine; Volynska Oblast; Lutsk District; Luts’k town; railway station, near (N50°44' E25°20'). Date of collection: 12 September 1969. Associated organism: Cucumis sativus (leaf). Collector: Marchenko, P.D.. Identifier: Heluta, V.P..