| Name | Sium suave f. fasciculatum Fassett |
| Authorship | Fassett |
| Rank | Forma |
| NomenclaturalStatus | NomLeg |
| Placed in | Sium suave Walter |
| GUID | urn:lsid:ipni.org:names:237357-2 |
| Citation | 1921 Rhodora 23: 111 |
| Holdings | 5 Specimens held in the Harvard University Herbaria identified as Sium suave f. fasciculatum Fassett |
| Identification made in | [no date] (5) |