This name is a synonym of Sedum cockerellii Britton.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 8901992) with original publication details: Acta Horti Gothob. 10(App.): 70–72, f. 528–535, pl. 44 1935.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:231645-2.
This name was in version 1 of The Plant List, record tro-8901992.