| Name | Juncus tweedyi Rydberg |
| Authorship | Rydberg |
| Rank | Species |
| Placed in | Juncus |
| Citation | 1900 Mem. New York Bot. Gard. 1: 90 |
| Holdings | 5 Specimens held in the Harvard University Herbaria identified as Juncus tweedyi Rydberg |
| Identification made in | [no date] (4), 1911 (1) |