Erysiphe trifolii
Grev.
KW [Darwin] 51637. Place of collection: Russia; Respublika Bashkortostan; Ufa; Bīla river, near (N54°46' E55°59'). Date of collection: 13 September 1941. Associated organism: Trifolium pratense (leaf). Collector: Zerov, D.K.. Identifier: Heluta, V.P..