| Name | Penstemon nanus D. D. Keck |
| Authorship | D. D. Keck |
| Rank | Species |
| Placed in | Penstemon Schmidel |
| Citation | 1940 Amer. Midl. Naturalist, Monogr. 23: 607 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Penstemon nanus D. D. Keck |
| Identification made in | [no date] (1) |