| Name | Carex longii Mackenzie |
| Authorship | Mackenzie |
| Rank | Species |
| NomenclaturalStatus | Unknown |
| Placed in | Carex Linnaeus |
| GUID | urn:lsid:ipni.org:names:292635-2 |
| Holdings | 160 Specimens held in the Harvard University Herbaria identified as Carex longii Mackenzie |
| Identification made in | [no date] (153), 1978 (1), 1998 (2), 2005 (1), 2006 (1), 2010 (1), 2025 (1) |