⚠ Version 1 of The Plant List has been superseded.

This name is in version 1.1 of The Plant List, record kew-2720752, and has not been changed.

Cicuta occidentalis f. frondosa (Greene) Greene is a synonym of Cicuta douglasii (DC.) J.M.Coult. & Rose

This name is a synonym of Cicuta douglasii (DC.) J.M.Coult. & Rose.

The record derives from WCSP (in review) which reports it as a synonym with original publication details: Pittonia 2: 7 1889.