This name is a synonym of Grabowskia boerhaaviifolia (L.f.) Schltdl..
The record derives from WCSP (in review)
(data supplied on 2012-03-26)
which reports it as a synonym with original publication details: Revis. Gen. Pl. 3(2): 221 1898.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:112914-2.
This name was in version 1 of The Plant List, record kew-2831553, and has not been changed.