| Name | Agaricus mustialensis P. Karsten |
| Authorship | P. Karsten |
| Rank | Species |
| Placed in | Agaricus |
| GUID | urn:lsid:indexfungorum.org:names:372185 |
| Citation | 1876 Bidrag Kännedom Finlands Natur Folk 25: 99 |
| Holdings | 3 Specimens held in the Harvard University Herbaria identified as Agaricus mustialensis P. Karsten |
| Identification made in | [no date] (1), 1985 (2) |