This name is a synonym of Nothofagus obliqua (Mirb.) Oerst..
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 135784) with original publication details: Bot. J. Linn. Soc. 129: 80 1999.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:317670-2.
This name was in version 1 of The Plant List, record kew-135784.