| Name | Collybia atratoides (Peck) Peck |
| Authorship | (Peck) Peck |
| Rank | Species |
| Placed in | Collybia |
| Citation | 1896 Rep. (Annual) Regents Univ. State New York New York State Mus. 49: 67 |
| Holdings | 2 Specimens held in the Harvard University Herbaria identified as Collybia atratoides (Peck) Peck |
| Identification made in | [no date] (2) |