| Name | Penstemon canescens f. villicaulis Fernald |
| Authorship | Fernald |
| Rank | Forma |
| NomenclaturalStatus | NomLeg |
| Placed in | Penstemon canescens (Britton) Britton |
| GUID | urn:lsid:ipni.org:names:187248-2 |
| Citation | 1949 Rhodora 51: 83 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Penstemon canescens f. villicaulis Fernald |
| Identification made in | [no date] (1) |