| Name | Penstemon fruticiformis var. armagosae (D. D. Keck) N. H. Holmgren |
| Authorship | (D. D. Keck) N. H. Holmgren |
| Rank | Variety |
| Placed in | Penstemon fruticiformis Coville |
| Holdings | 2 Specimens held in the Harvard University Herbaria identified as Penstemon fruticiformis var. armagosae (D. D. Keck) N. H. Holmgren |
| Identification made in | [no date] (2) |