| Name | Penstemon radicosus A. Nelson |
| Authorship | A. Nelson |
| Rank | Species |
| NomenclaturalStatus | NomLeg |
| Placed in | Penstemon Schmidel |
| GUID | urn:lsid:ipni.org:names:187722-2 |
| Citation | 1898 Bull. Torrey Bot. Club 25: 280 |
| Holdings | 56 Specimens held in the Harvard University Herbaria identified as Penstemon radicosus A. Nelson |
| Identification made in | [no date] (43), 1930 (12), 1969 (1) |