This name is a synonym of Mimulus depressus var. nanus (Phil.) Reiche.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 50314895) with original publication details: Fl. Atacam. 45 1860.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:162306-2.
This name was in version 1 of The Plant List, record tro-50314895.