| Name | Eupatorium perfoliatum f. trifolium Fassett |
| Authorship | Fassett |
| Rank | Forma |
| Placed in | Eupatorium perfoliatum Linnaeus |
| GUID | urn:lsid:ipni.org:names:100632-2 |
| Citation | 1925 Rhodora 27(316): 55 |
| Holdings | 2 Specimens held in the Harvard University Herbaria identified as Eupatorium perfoliatum f. trifolium Fassett |
| Identification made in | 2014 (2) |
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