This name is a synonym of Ajuga chamaepitys subsp. chia (Schreb.) Arcang..
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 5198) with original publication details: Fl. Sicul. Prodr. 2: 66 1828.
This name was in version 1 of The Plant List, record kew-5198.