| Name | Juncus canadensis var. subcaudatus Engelmann |
| Authorship | Engelmann |
| Rank | Variety |
| NomenclaturalStatus | NomLeg |
| Placed in | Juncus canadensis J. Gay ex Laharpe |
| GUID | urn:lsid:ipni.org:names:1065440-2 |
| Citation | 1867 Manual (Gray), ed. 5 543 |
| Holdings | 8 Specimens held in the Harvard University Herbaria identified as Juncus canadensis var. subcaudatus Engelmann |
| Identification made in | [no date] (6), 2022 (2) |