This name is a synonym of Leucas alba (Forssk.) Sebald.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 152112) with original publication details: Fl. Aegypt.-Arab. 107 1775.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:453783-1.
This name was in version 1 of The Plant List, record kew-152112, and has not been changed.