This name is a synonym of Nepeta nepetella subsp. murcica (Guirão ex Willk.) Aedo.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 134775) with original publication details: Anales Jard. Bot. Madrid 47: 266 1989 publ. 1990.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:966527-1.
This name was in version 1 of The Plant List, record kew-134775.