This name is a synonym of Sedum roseum (L.) Scop..
The record derives from WCSP (in review)
(data supplied on 2012-03-23)
which reports it as a synonym with original publication details: Bull. Natl. Sci. Mus. Tokyo, B 25: 56 1999.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:1011915-1.
This name was in version 1 of The Plant List, record kew-2416702, and has not been changed.