This name is a synonym of Sedum pulchellum Michx..
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 8901465) with original publication details: Man. S.E. Fl. 587, 1504 1933.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:231914-2.
This name was in version 1 of The Plant List, record tro-8901465.