This name is a synonym of Phlomis purpurea subsp. caballeroi (Pau) Rivas Mart..
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 152160) with original publication details: Bol. Soc. Aragonesa Ci. Nat. 17: 132 1918.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:453829-1.
This name was in version 1 of The Plant List, record kew-152160, and has not been changed.