| Name | Cortinarius mammosus Kauffman |
| Authorship | Kauffman |
| Rank | Species |
| Placed in | Cortinarius |
| GUID | urn:lsid:indexfungorum.org:names:101483 |
| Citation | 1918 Michigan Geol. Biol. Surv. Publ., Biol. Ser. 26: 415 |
| Holdings | 2 Specimens held in the Harvard University Herbaria identified as Cortinarius mammosus Kauffman |
| Identification made in | [no date] (2) |