| Name | Penstemon triflorus var. integrifolius (Pennell) Cory |
| Authorship | (Pennell) Cory |
| Rank | Variety |
| Placed in | Penstemon triflorus A. Heller |
| Citation | 1936 Rhodora 38: 407 |
| Holdings | 11 Specimens held in the Harvard University Herbaria identified as Penstemon triflorus var. integrifolius (Pennell) Cory |
| Identification made in | [no date] (2), 1974 (9) |
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