| Name | Penstemon newberryi var. sonomensis (Greene) Jepson |
| Authorship | (Greene) Jepson |
| Rank | Variety |
| Placed in | Penstemon newberryi A. Gray |
| GUID | urn:lsid:ipni.org:names:187612-2 |
| Holdings | 15 Specimens held in the Harvard University Herbaria identified as Penstemon newberryi var. sonomensis (Greene) Jepson |
| Identification made in | [no date] (7), 1977 (8) |