| Name | Juncus nevadensis var. columbianus (Coville) H. St. John |
| Authorship | (Coville) H. St. John |
| Rank | Variety |
| Placed in | Juncus nevadensis S. Watson |
| Citation | 1937 Fl. S.-e. Washington (St. John) 82 |
| Holdings | 7 Specimens held in the Harvard University Herbaria identified as Juncus nevadensis var. columbianus (Coville) H. St. John |
| Identification made in | [no date] (7) |