This name is a synonym of Cistus ladanifer subsp. mauritianus Pau & Sennen.
The record derives from WCSP (in review)
(data supplied on 2012-03-23)
which reports it as a synonym with original publication details: Mém. Soc. Bot. France 32: 6 1951.
This name was in version 1 of The Plant List, record kew-2723460, and has not been changed.