This name is a synonym of Alternanthera paronychioides A.St.-Hil..
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 22: 142 1919.
This name was in version 1 of The Plant List, record kew-2631371.