This name is a synonym of Ajuga nipponensis Makino.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 5323) with original publication details: J. Soc. Trop. Agric. 3: 225 1931.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:444619-1.
This name was in version 1 of The Plant List, record kew-5323, and has not been changed.