This name is a synonym of Mimulus glabratus Kunth.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 29200345) with original publication details: Nov. Gen. Sp. (quarto ed.) 2: 370 1817.
This name was in version 1 of The Plant List, record tro-29200345.