This name is a synonym of Monardella × subglabra (Hoover) Hardham.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 129415) with original publication details: Leafl. W. Bot. 5: 181 1949.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:163443-2.
This name was in version 1 of The Plant List, record kew-129415, and has not been changed.