This name is a synonym of Alsophila balanocarpa (D.C. Eaton) D.S. Conant.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 26621320) with original publication details: Mem. Amer. Acad. Arts, n.s. 8: 215 1860.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:73122-2.
This name was in version 1 of The Plant List, record tro-26621320, and has not been changed.