This name is a synonym of Acalypha macrostachya Jacq..
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 12802430) with original publication details: Nov. Gen. Sp. Pl. 3: 22 1845.
This name was in version 1 of The Plant List, record tro-12802430, and has not been changed.