This name is a synonym of Sempervivum minutum (Kunze ex Willk.) Nyman ex Pau.
The record derives from WCSP (in review)
(data supplied on 2012-03-23)
which reports it as a synonym with original publication details: Candollea 30: 287 1975.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:878949-1.
This name was in version 1 of The Plant List, record kew-2490021, and has not been changed.