| Name | Thamniopsis undata (Hedwig) W. R. Buck |
| Authorship | (Hedwig) W. R. Buck |
| Rank | Species |
| NomenclaturalStatus | NomLeg |
| Placed in | Thamniopsis |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Thamniopsis undata (Hedwig) W. R. Buck |
| Identification made in | [no date] (1) |