This name is a synonym of Alsophila kirkii (Hook.) R.M. Tryon.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 26600553) with original publication details: Syn. Fil. 22 1865.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:17073170-1.
This name was in version 1 of The Plant List, record tro-26600553, and has not been changed.