| 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) |
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