This name is a synonym of Sedum atratum L..
The record derives from WCSP (in review)
(data supplied on 2012-03-23)
which reports it as a synonym with original publication details: Feddes Repert. Spec. Nov. Regni Veg. 69: 62 1964.
This name was in version 1 of The Plant List, record kew-2871699, and has not been changed.