This name is a synonym of Nepeta supina subsp. buschii (Sosn. & Manden.) Menitsky.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 134487) with original publication details: Zametki Sist. Geogr. Rast. 16: 10 1951.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:452310-1.
This name was in version 1 of The Plant List, record kew-134487, and has not been changed.