| Name | Juncus longii Fernald |
| Authorship | Fernald |
| Rank | Species |
| NomenclaturalStatus | NomLeg |
| Placed in | Juncus |
| GUID | urn:lsid:ipni.org:names:443150-1 |
| Citation | 1937 Rhodora 39: 397 |
| Holdings | 24 Specimens held in the Harvard University Herbaria identified as Juncus longii Fernald |
| Identification made in | [no date] (24) |