Erysiphe trifolii
Grev.
KW [Darwin] 13161. Place of collection: Ukraine; Khmelnitskyi Oblast; Kamianets-Podilskyi District; Ustya village (N48°34' E26°39'). Date of collection: 3 July 1948. Associated organism: Melilotus officinalis (leaf). Collector: Isaeva, O.V.. Identifier: Heluta, V.P..