⚠ Version 1 of The Plant List has been superseded.

This name is in version 1.1 of The Plant List, record tro-50089127, with some changes.

Sium cicutifolium var. carsonii (Durand) Eames is a synonym of Sium suave f. carsonii (Durand) Fassett

The record derives from Tropicos which reports it as a synonym (record 50089127) with original publication details: Rhodora 18(215): 239 239 1916.