| Name | Eupatorium elongatum Hooker & Arnott |
| Authorship | Hooker & Arnott |
| Rank | Species |
| NomenclaturalStatus | NomLeg |
| Placed in | Eupatorium Linnaeus |
| GUID | urn:lsid:ipni.org:names:99916-2 |
| Citation | 1835 Compan. Bot. Mag. 1: 241 |
| Holdings | 2 Specimens held in the Harvard University Herbaria identified as Eupatorium elongatum Hooker & Arnott |
| Identification made in | [no date] (1), 1982 (1) |