| Name | Ambrosia cordifolia (A. Gray) W. W. Payne |
| Authorship | (A. Gray) W. W. Payne |
| Rank | Species |
| Placed in | Ambrosia Linnaeus |
| Citation | 1964 J. Arnold Arbor. 45: 421 |
| Holdings | 2 Specimens held in the Harvard University Herbaria identified as Ambrosia cordifolia (A. Gray) W. W. Payne |
| Identification made in | 2015 (2) |