This name is a synonym of Sedum pallidum M.Bieb..
The record derives from WCSP (in review)
(data supplied on 2012-03-23)
which reports it as a synonym with original publication details: in Fl. Vostoch. Evropy 10: 279 2001.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:20002582-1.
This name was in version 1 of The Plant List, record kew-2483520, and has not been changed.