| Name | Penstemon tidestromii Pennell |
| Authorship | Pennell |
| Rank | Species |
| Placed in | Penstemon Schmidel |
| Citation | 1920 Contr. U.S. Natl. Herb. 20: 379 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Penstemon tidestromii Pennell |
| Identification made in | [no date] (1) |