This name is a synonym of Sedum smallii (Britton) H.E.Ahles.
The record derives from WCSP (in review)
(data supplied on 2012-03-23)
which reports it as a synonym and as an illegitimate name with original publication details: Acta Horti Gothob. 10(App.): 137 1936.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:231691-2.
This name was in version 1 of The Plant List, record kew-2483039, and has not been changed.