| Name | Carex atratiformis Britton |
| Authorship | Britton |
| Rank | Species |
| NomenclaturalStatus | NomLeg |
| Placed in | Carex Linnaeus |
| GUID | urn:lsid:ipni.org:names:45808-2 |
| Citation | 1895 Bull. Torrey Bot. Club 22: 222 |
| Holdings | 50 Specimens held in the Harvard University Herbaria identified as Carex atratiformis Britton |
| Identification made in | [no date] (50) |
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