| Name | Juncus castaneus Smith |
| Authorship | Smith |
| Rank | Species |
| Placed in | Juncus |
| Contains | Juncus castaneus subsp. leucochlamys (W. J. Zinger ex V. I. Kreczetowicz) Hultén |
| Citation | 1800 Fl. Brit. 1: 383 |
| Holdings | 264 Specimens held in the Harvard University Herbaria identified as Juncus castaneus Smith |
| Identification made in | [no date] (264) |