| Name | Thamniopsis diffusa (Wilson ex Mitten) W. R. Buck |
| Authorship | (Wilson ex Mitten) W. R. Buck |
| Rank | Species |
| NomenclaturalStatus | NomLeg |
| Placed in | Thamniopsis |
| Holdings | 2 Specimens held in the Harvard University Herbaria identified as Thamniopsis diffusa (Wilson ex Mitten) W. R. Buck |
| Identification made in | 2007 (1), 2008 (1) |