| Name | Eupatorium patagonicum Klatt |
| Authorship | Klatt |
| Rank | Species |
| NomenclaturalStatus | NomLeg |
| Placed in | Eupatorium Linnaeus |
| GUID | urn:lsid:ipni.org:names:206572-1 |
| Citation | 1882 Abh. Naturf. Ges. Halle 15: 324 |
| Holdings | 4 Specimens held in the Harvard University Herbaria identified as Eupatorium patagonicum Klatt |
| Identification made in | [no date] (2), 1977 (1), 1982 (1) |