| Name | Penstemon barbatus subsp. barbatus |
| Authorship | |
| Rank | Subspecies |
| NomenclaturalStatus | Unknown |
| Placed in | Penstemon barbatus (Cavanilles) Roth |
| Holdings | 2 Specimens held in the Harvard University Herbaria identified as Penstemon barbatus subsp. barbatus |
| Identification made in | [no date] (2) |
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