This name is a synonym of Lavandula angustifolia subsp. pyrenaica (DC.) Guinea.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 251869) with original publication details: Itinera Geobot. 15: 703 2002.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:20009356-1.
This name was in version 1 of The Plant List, record kew-251869.