| Name | Mertensia praecox Smiley ex J. F. Macbride |
| Authorship | Smiley ex J. F. Macbride |
| Rank | Species |
| NomenclaturalStatus | NomLeg |
| Placed in | Mertensia |
| Citation | 1916 Contr. Gray Herb. n. s. 48: 10 |
| Holdings | 2 Specimens held in the Harvard University Herbaria identified as Mertensia praecox Smiley ex J. F. Macbride |
| Identification made in | 1916 (1), 2018 (1) |