| Name | Penstemon grandiflorus Nuttall |
| Authorship | Nuttall |
| Rank | Species |
| NomenclaturalStatus | Unknown |
| Placed in | Penstemon Schmidel |
| Remarks | Created from NEVP Ingest: Penstemon grandiflorus Nuttall |
| GUID | urn:uuid:deedecc2-89d5-4629-8731-67e4c00b78ba |
| Holdings | 62 Specimens held in the Harvard University Herbaria identified as Penstemon grandiflorus Nuttall |
| Identification made in | [no date] (49), 1930 (11), 1934 (2) |