| Name | Hypnum pinnatifidum Sullivant |
| Authorship | Sullivant |
| Rank | Species |
| NomenclaturalStatus | NomLeg |
| Placed in | Hypnum Hedwig |
| Citation | 1865 Musci Bor.-Amer., ed. 2 513[Schedae 85] |
| Holdings | 2 Specimens held in the Harvard University Herbaria identified as Hypnum pinnatifidum Sullivant |
| Identification made in | [no date] (1), 1995 (1) |