| Name | Penstemon laetus subsp. filiformis D. D. Keck |
| Authorship | D. D. Keck |
| Rank | Subspecies |
| NomenclaturalStatus | NomLeg |
| Placed in | Penstemon laetus A. Gray |
| GUID | urn:lsid:ipni.org:names:187573-2 |
| Citation | 1932 Univ. Calif. Publ. Bot. 16: 394 |
| Holdings | 2 Specimens held in the Harvard University Herbaria identified as Penstemon laetus subsp. filiformis D. D. Keck |
| Identification made in | [no date] (2) |
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