| Name | Penstemon rattanii subsp. kleei (Greene) D. D. Keck |
| Authorship | (Greene) D. D. Keck |
| Rank | Subspecies |
| NomenclaturalStatus | Unknown |
| Placed in | Penstemon rattanii A. Gray |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Penstemon rattanii subsp. kleei (Greene) D. D. Keck |
| Identification made in | [no date] (1) |
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