| Name | Carex polymorpha Muhlenberg |
| Authorship | Muhlenberg |
| Rank | Species |
| NomenclaturalStatus | NomLeg |
| Placed in | Carex Linnaeus |
| Holdings | 44 Specimens held in the Harvard University Herbaria identified as Carex polymorpha Muhlenberg |
| Identification made in | [no date] (42), 2005 (1), 2012 (1) |