This name is a synonym of Nothofagus fusca var. colensoi (Hook.f.) Cheeseman.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 83915) with original publication details: Trans. & Proc. New Zealand Inst. 31: 280 1899.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:295635-1.
This name was in version 1 of The Plant List, record kew-83915, and has not been changed.