This name is a synonym of Hornungia procumbens subsp. revelierei (Jord.) Giardina & Raimondo.
The record derives from WCSP (in review)
(data supplied on 2012-03-23)
which reports it as a synonym with original publication details: Willdenowia 13: 93 1983.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:922248-1.
This name was in version 1 of The Plant List, record kew-2857280, and has not been changed.