This name is a synonym of Petrorhagia prolifera (L.) P.W.Ball & Heywood.
The record derives from WCSP (in review)
(data supplied on 2012-03-23)
which reports it as a synonym with original publication details: Vollst. Pflanzensyst. 6: 563 1780.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:152008-1.
This name was in version 1 of The Plant List, record kew-2701919, and has not been changed.