Agaricus bisporus (J.E. Lange) Imbach

KW [Darwin] 35598. Localité de collection: Ukraine; Luhansk Oblast; Milove District; Striletskyi Steppe reserve; not far from the yard of the reserve (N49°14' E40°05'). Date de collection: 4 Novembre 1954. Collectionneure: Bauman, M.P..