| Name | Eupatorium orbignyanum Klatt |
| Authorship | Klatt |
| Rank | Species |
| NomenclaturalStatus | NomLeg |
| Placed in | Eupatorium Linnaeus |
| Contains | Eupatorium orbignyanum f. glabratum B. L. Robinson |
| GUID | urn:lsid:ipni.org:names:100528-2 |
| Citation | 1882 Abh. Naturf. Ges. Halle 15: 324 |
| Holdings | 4 Specimens held in the Harvard University Herbaria identified as Eupatorium orbignyanum Klatt |
| Identification made in | [no date] (3), 1982 (1) |