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 165994) with original publication details: Fl. Galicia 3: 581 1909.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:445228-1.
This name was in version 1 of The Plant List, record kew-165994.