This name is a synonym of Ajuga macrosperma var. thomsonii (Maxim.) Hook.f..
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 5407) with original publication details: Bull. Acad. Imp. Sci. Saint-Pétersbourg 29: 189 1883.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:444683-1.
This name was in version 1 of The Plant List, record kew-5407, and has not been changed.