This name is a synonym of Prunella vulgaris subsp. asiatica (Nakai) H.Hara.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 165974) with original publication details: Bot. Mag. (Tokyo) 28: 158 1914.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:455132-1.
This name was in version 1 of The Plant List, record kew-165974.