This name is a synonym of Sedum hultenii Fröd..
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 8902572) with original publication details: Diagn. Pl. Nov. Mexic. 1: 11 1878.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:275549-1.
This name was in version 1 of The Plant List, record tro-8902572, and has not been changed.