| Name | Sium carsonii Durand ex A. Gray |
| Authorship | Durand ex A. Gray |
| Rank | Species |
| NomenclaturalStatus | NomLeg |
| Placed in | Sium |
| GUID | urn:lsid:ipni.org:names:1107970-2 |
| Citation | 1867 Manual (Gray), ed. 5 196 |
| Holdings | 13 Specimens held in the Harvard University Herbaria identified as Sium carsonii Durand ex A. Gray |
| Identification made in | [no date] (12), 1897 (1) |