This name is a synonym of Parietaria lusitanica subsp. chersonensis (Láng) Chrtek.
The record derives from WCSP (in review)
(data supplied on 2012-03-26)
which reports it as a synonym with original publication details: Flora 10(1, Beil. 3): 67 1827.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:77087472-1.
This name was in version 1 of The Plant List, record kew-2608069, and has not been changed.