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: Nov. Gen. Sp. Pl. Bras. 2: 31 1826.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:162971-2.
This name was in version 1 of The Plant List, record kew-2364917.