This name is a synonym of Sedum cespitosum (Cav.) DC..
The record derives from WCSP (in review)
(data supplied on 2012-03-23)
which reports it as a synonym with original publication details: Fl. Franç. ed. 3, Suppl.: 522 1805.
This name was in version 1 of The Plant List, record kew-2741867, and has not been changed.