This name is a synonym of Nasturtium microphyllum (Boenn. ex Rchb.) Rchb..
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 100361093) with original publication details: Nat. Pflanzenfam. 3(2): 183. 1891.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:288159-1.
This name was in version 1 of The Plant List, record tro-100361093.