| Name | Agaricus mutabilis Schaeffer: Fries |
| Authorship | Schaeffer: Fries |
| Rank | Species |
| Placed in | Agaricus |
| Citation | 1774 Fung. Bavar. Palat. Nasc. 4: 6 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Agaricus mutabilis Schaeffer: Fries |
| Identification made in | [no date] (1) |