| Name | Eupatorium laxum Gardner | 
| Authorship | Gardner | 
| Rank | Species | 
| NomenclaturalStatus | NomLeg | 
| Placed in | Eupatorium Linnaeus | 
| GUID | urn:lsid:ipni.org:names:206225-1 | 
| Citation | 1846 London J. Bot. 5: 476 | 
| Holdings | 8 Specimens held in the Harvard University Herbaria identified as Eupatorium laxum Gardner | 
| Identification made in | [no date] (4), 1977 (1), 1982 (2), 2007 (1) |