| Name | Juncus cooperi Engelmann |
| Authorship | Engelmann |
| Rank | Species |
| Placed in | Juncus |
| GUID | urn:lsid:ipni.org:names:442847-1 |
| Citation | 1868 Trans. Acad. Sci. St. Louis 2: 590 |
| Holdings | 18 Specimens held in the Harvard University Herbaria identified as Juncus cooperi Engelmann |
| Identification made in | [no date] (17), 2012 (1) |