This name is a synonym of Ajuga chamaepitys subsp. tridactylites (Ging. ex Benth.) P.H.Davis.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 5409) with original publication details: Labiat. Gen. Spec. 699 1835.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:444685-1.
This name was in version 1 of The Plant List, record kew-5409, and has not been changed.