This name is a synonym of Sedum eriocarpum subsp. delicum (Vierh.) 't Hart.
The record derives from WCSP (in review)
(data supplied on 2012-03-23)
which reports it as a synonym with original publication details: Verh. Zool.-Bot. Ges. Wien 69: 224 1919.
This name was in version 1 of The Plant List, record kew-2871630, and has not been changed.