This name is a synonym of Asterella tenera (Mitt.) R.M. Schust..
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 35212208) with original publication details: Fl. Nov.-Zel. 2: 170 1855.
This name was in version 1 of The Plant List, record tro-35212208, and has not been changed.