This name is a synonym of Niedenzuella acutifolia (Cav.) W.R.Anderson.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 19500829) with original publication details: Ann. Sci. Nat., Bot. 13: 263 1840.
This name was in version 1 of The Plant List, record tro-19500829.