| Name | Eupatorium oreganum Nuttall |
| Authorship | Nuttall |
| Rank | Species |
| NomenclaturalStatus | NomLeg |
| Placed in | Eupatorium Linnaeus |
| Citation | 1841 Trans. Amer. Philos. Soc. 7: 286 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Eupatorium oreganum Nuttall |
| Identification made in | [no date] (1) |