Golovinomyces mayorii
(S. Blumer) Heluta
KW [Darwin] 12214. Place of collection: Ukraine; Volynska oblast; Lutsk district; Syrnyky village (N50°48' E25°14'). Date of collection: 22 September 1981. Associated organism: Cirsium arvense (leaf, petiole, stem). Collector: Marchenko, P.D.. Identifier: Heluta, V.P..