| Name | Juncus polycephalos Michaux |
| Authorship | Michaux |
| Rank | Species |
| Placed in | Juncus |
| Contains | Juncus polycephalos var. schizocephalus Fernald |
| Citation | 1803 [19 Mar 1803] Fl. Bor.-Amer. [Michaux] 1: 192 |
| Holdings | 96 Specimens held in the Harvard University Herbaria identified as Juncus polycephalos Michaux |
| Identification made in | [no date] (96) |