| Name | Agaricus diminutivus Peck |
| Authorship | Peck |
| Rank | Species |
| Placed in | Agaricus |
| GUID | urn:lsid:indexfungorum.org:names:226753 |
| Citation | 1902 Rep. (Annual) New York State Mus. Nat. Hist. 54: 184 |
| Holdings | 11 Specimens held in the Harvard University Herbaria identified as Agaricus diminutivus Peck |
| Identification made in | [no date] (11) |