This name is a synonym of Quercus rex Hemsl..
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 172595) with original publication details: Ann. Sci. Nat., Bot. X, 3: 384 1921.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:359597-1.
This name was in version 1 of The Plant List, record kew-172595, and has not been changed.