| Name | Juncus supiniformis Engelmann |
| Authorship | Engelmann |
| Rank | Species |
| NomenclaturalStatus | NomLeg |
| Placed in | Juncus |
| GUID | urn:lsid:ipni.org:names:443551-1 |
| Citation | 1868 Trans. Acad. Sci. St. Louis 2: 461 |
| Holdings | 29 Specimens held in the Harvard University Herbaria identified as Juncus supiniformis Engelmann |
| Identification made in | [no date] (29) |