| Name | Penstemon montanus var. idahoensis (D. D. Keck) Cronquist |
| Authorship | (D. D. Keck) Cronquist |
| Rank | Variety |
| Placed in | Penstemon montanus Greene |
| Citation | 1959 Vasc. Pl. Pacif. N. W. 4: 394 |
| Holdings | 6 Specimens held in the Harvard University Herbaria identified as Penstemon montanus var. idahoensis (D. D. Keck) Cronquist |
| Identification made in | [no date] (6) |