| Name | Juncus canadensis var. coarctatus Engelmann | 
| Authorship | Engelmann | 
| Rank | Variety | 
| Placed in | Juncus canadensis J. Gay ex Laharpe | 
| GUID | urn:lsid:ipni.org:names:1008843-2 | 
| Citation | 1866 Trans. Acad. Sci. St. Louis 2: 474 | 
| Holdings | 4 Specimens held in the Harvard University Herbaria identified as Juncus canadensis var. coarctatus Engelmann | 
| Identification made in | [no date] (3), 2022 (1) | 
