This name is a synonym of Adiantum concinnum Humb. & Bonpl. ex Willd..
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 26616815) with original publication details: Mém. Foug. 5: 119 1852.
This name was in version 1 of The Plant List, record tro-26616815, and has not been changed.