This name is a synonym of Prunella × bicolor Beck.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 165931) with original publication details: Pl. Espagne 1927: no. 6186 1927.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:455098-1.
This name was in version 1 of The Plant List, record kew-165931.