| Name | Penstemon aggregatus Pennell |
| Authorship | Pennell |
| Rank | Species |
| NomenclaturalStatus | NomLeg |
| Placed in | Penstemon Schmidel |
| GUID | urn:lsid:ipni.org:names:807980-1 |
| Citation | 1920 Contr. U.S. Natl. Herb. 20: 367 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Penstemon aggregatus Pennell |
| Identification made in | [no date] (1) |
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