| Name | Eupatorium alternifolium f. dentatum Hassler |
| Authorship | Hassler |
| Rank | Forma |
| NomenclaturalStatus | NomLeg |
| Placed in | Eupatorium alternifolium Schultz Bipontinus ex Baker |
| GUID | urn:lsid:ipni.org:names:293320-2 |
| Citation | 1915 Repert. Spec. Nov. Regni Veg. 14: 287 |
| Holdings | 5 Specimens held in the Harvard University Herbaria identified as Eupatorium alternifolium f. dentatum Hassler |
| Identification made in | [no date] (1), 1982 (2), 2007 (2) |