| Name | Juncus marginatus var. setosus Coville |
| Authorship | Coville |
| Rank | Variety |
| Placed in | Juncus marginatus Rostkovius |
| Citation | 1893 Proc. Biol. Soc. Washington 8: 124 |
| Holdings | 8 Specimens held in the Harvard University Herbaria identified as Juncus marginatus var. setosus Coville |
| Identification made in | [no date] (7), 1940 (1) |