| Name | Penstemon platyphyllus Rydberg |
| Authorship | Rydberg |
| Rank | Species |
| NomenclaturalStatus | Unknown |
| Placed in | Penstemon Schmidel |
| GUID | urn:lsid:ipni.org:names:187669-2 |
| Holdings | 17 Specimens held in the Harvard University Herbaria identified as Penstemon platyphyllus Rydberg |
| Identification made in | [no date] (1), 1979 (2), 1992 (14) |
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