| Name | Carex atrivaginata Nelmes |
| Authorship | Nelmes |
| Rank | Species |
| Placed in | Carex Linnaeus |
| Citation | 1955 Mém. Mus. Natl. Hist. Nat., Ser. B, Bot. iv. 106 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Carex atrivaginata Nelmes |
| Identification made in | 2023 (1) |