| Name | Penstemon brevisepalus f. heterolasius Fernald |
| Authorship | Fernald |
| Rank | Forma |
| NomenclaturalStatus | NomLeg |
| Placed in | Penstemon brevisepalus Pennell |
| GUID | urn:lsid:ipni.org:names:187223-2 |
| Citation | 1949 Rhodora 51: 84 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Penstemon brevisepalus f. heterolasius Fernald |
| Identification made in | [no date] (1) |