Agaricus bisporus (J.E. Lange) Imbach

KW [Darwin] 35564. Place of collection: Ukraine; Kiev oblast; Bila Tserkva district; Bila Tserkva town; Oleksandrīya arboretum (N49°48' E30°03'). Date of collection: 15 September 1956. Collector: Balkovs’kiĭ, B.Ye..