| Name | Penstemon strictus subsp. angustus Pennell |
| Authorship | Pennell |
| Rank | Subspecies |
| NomenclaturalStatus | NomLeg |
| Placed in | Penstemon strictus Bentham |
| GUID | urn:lsid:ipni.org:names:187795-2 |
| Citation | 1920 Contr. U.S. Natl. Herb. 20: 356 |
| Holdings | 2 Specimens held in the Harvard University Herbaria identified as Penstemon strictus subsp. angustus Pennell |
| Identification made in | [no date] (2) |