| Name | Eupatorium perfoliatum f. truncatum (Muhlenberg ex Willdenow) Fassett |
| Authorship | (Muhlenberg ex Willdenow) Fassett |
| Rank | Forma |
| Placed in | Eupatorium perfoliatum Linnaeus |
| Citation | 1925 Rhodora 27(316): 55 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Eupatorium perfoliatum f. truncatum (Muhlenberg ex Willdenow) Fassett |
| Identification made in | [no date] (1) |