| Name | Agaricus iocephalus Berkeley & M. A. Curtis |
| Authorship | Berkeley & M. A. Curtis |
| Rank | Species |
| Placed in | Agaricus |
| Citation | 1853 Ann. Mag. Nat. Hist. Ser. 2 12: 420 |
| Holdings | 2 Specimens held in the Harvard University Herbaria identified as Agaricus iocephalus Berkeley & M. A. Curtis |
| Identification made in | [no date] (2) |