This name is a synonym of Quercus sinuata var. breviloba (Torr.) C.H.Mull..
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 172583) with original publication details: Bull. Torrey Bot. Club 10: 91 1883.
This name was in version 1 of The Plant List, record kew-172583.