This name is a synonym of Alternanthera halimifolia (Lam.) Standl. ex Pittier.
The record derives from WCSP (in review)
(data supplied on 2012-03-23)
which reports it as a synonym with original publication details: Symb. Antill. 5: 340 1907.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:10351-2.
This name was in version 1 of The Plant List, record kew-2631200.