This name is a synonym of Sedum celatum Fröd..
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 50161797) with original publication details: Bot. Jahrb. Syst. 68(5): 603 1938.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:276270-1.
This name was in version 1 of The Plant List, record tro-50161797, and has not been changed.