| Name | Diphyscium mucronifolium Mitten |
| Authorship | Mitten |
| Rank | Species |
| NomenclaturalStatus | Unknown |
| Placed in | Diphyscium |
| Holdings | 7 Specimens held in the Harvard University Herbaria identified as Diphyscium mucronifolium Mitten |
| Identification made in | [no date] (5), 2000 (2) |