This name is a synonym of Rorippa curvisiliqua (Hook.) Bessey ex Britton.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 4101424) with original publication details: Vasc. Pl. Pacific N.W. 2: 536 1964.
This name was in version 1 of The Plant List, record tro-4101424.