⚠ Version 1 of The Plant List has been superseded.
This name is in version 1.1 of The Plant List, record tro-50130063, with some changes.
This name is a synonym of Rorippa palustris var. occidentalis (S. Watson) Rollins.
The record derives from Tropicos which reports it as a synonym (record 50130063) with original publication details: Bot. Surv. Olympic Penins. 161 161 1936.