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 50129981) with original publication details: Man. Bot. San Francisco Bay 20 1894.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:222158-2.
This name was in version 1 of The Plant List, record tro-50129981.