Agaricus silvaticus
Schaeff.
KW [Darwin] 35709. Place of collection: Ukraine; Cherkasy Oblast; Kaniv District; Kanīv town; Kanīvs’kiĭ reserve (N49°44' E31°30'). Date of collection: 23 July 1954. Collector: Zerova, M.Ya.. Identifier: Wasser, S.P..