| Name | Petalostemon emarginatum Torrey & A. Gray |
| Authorship | Torrey & A. Gray |
| Rank | Species |
| NomenclaturalStatus | NomLeg |
| Placed in | Petalostemon |
| Citation | 1838 Fl. N. Amer. [Torr. & A. Gray] 1: 311 |
| Holdings | 3 Specimens held in the Harvard University Herbaria identified as Petalostemon emarginatum Torrey & A. Gray |
| Identification made in | [no date] (2), 2009 (1) |