| Name | Penstemon whitedii subsp. tristis Pennell & D. D. Keck |
| Authorship | Pennell & D. D. Keck |
| Rank | Subspecies |
| NomenclaturalStatus | NomLeg |
| Placed in | Penstemon whitedii Piper |
| GUID | urn:lsid:ipni.org:names:187862-2 |
| Citation | 1938 Bull. Torrey Bot. Club 65: 254 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Penstemon whitedii subsp. tristis Pennell & D. D. Keck |
| Identification made in | [no date] (1) |
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