| Name | Apium popei (Torrey & A. Gray) A. Gray |
| Authorship | (Torrey & A. Gray) A. Gray |
| Rank | Species |
| Placed in | Apium Linnaeus |
| Citation | 1868 Proc. Amer. Acad. Arts 7: 343 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Apium popei (Torrey & A. Gray) A. Gray |
| Identification made in | [no date] (1) |