This name is a synonym of Mimulus tenellus var. nepalensis (Benth.) Tsoong.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 29200087) with original publication details: Scroph. Ind. 29 1835.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:806029-1.
This name was in version 1 of The Plant List, record tro-29200087, and has not been changed.