This name is a synonym of Alternanthera ramosissima (Mart.) Chodat & Hassl..
The record derives from WCSP (in review)
(data supplied on 2012-03-23)
which reports it as a synonym with original publication details: Arq. Mus. Nac. Rio de Janeiro 13: 63 1905.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:296009-2.
This name was in version 1 of The Plant List, record kew-2631302.