| Name | Lepiota olivaceomamosa Rick |
| Authorship | Rick |
| Rank | Species |
| Placed in | Lepiota |
| Citation | 1920 Broteria, Ser. Bot. 18: 49 |
| Holdings | 8 Specimens held in the Harvard University Herbaria identified as Lepiota olivaceomamosa Rick |
| Identification made in | [no date] (8) |