This name is a synonym of Rorippa alpina (S. Watson) Rydb..
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 50129871) with original publication details: Bull. Herb. Boissier 3(5): 207 1895.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:222168-2.
This name was in version 1 of The Plant List, record tro-50129871, and has not been changed.