You selected Quercus oblongifolia R.Br. This is a synonym for:

Accepted scientific name:
Quercus chrysolepis Liebm. (accepted name) 1 literature reference for Quercus chrysolepis Liebm.
Synonyms:
Quercus chrysolepis var. grandis (Jeps.) Jeps. (synonym) 1 literature reference for Quercus chrysolepis var. grandis (Jeps.) Jeps.
Quercus chrysolepis forma grandis Jeps. (synonym) 1 literature reference for Quercus chrysolepis forma grandis Jeps.
Quercus chrysolepis var. hansenii (Jeps.) Jeps. (synonym) 1 literature reference for Quercus chrysolepis var. hansenii (Jeps.) Jeps.
Quercus chrysolepis forma hansenii Jeps. (synonym) 1 literature reference for Quercus chrysolepis forma hansenii Jeps.
Quercus chrysolepis var. nana (Jeps.) Jeps. (synonym) 1 literature reference for Quercus chrysolepis var. nana (Jeps.) Jeps.
Quercus chrysolepis forma nana Jeps. (synonym) 1 literature reference for Quercus chrysolepis forma nana Jeps.
Quercus chrysolepis var. pendula (Jeps.) Jeps. (synonym) 1 literature reference for Quercus chrysolepis var. pendula (Jeps.) Jeps.
Quercus chrysolepis forma pendula Jeps. (synonym) 1 literature reference for Quercus chrysolepis forma pendula Jeps.
Quercus chrysolepis subsp. wilcoxii (Rydb.) A.E.Murray (synonym) 1 literature reference for Quercus chrysolepis subsp. wilcoxii (Rydb.) A.E.Murray
Quercus chrysolepis var. wilcoxii (Rydb.) A.E.Murray (synonym) 1 literature reference for Quercus chrysolepis var. wilcoxii (Rydb.) A.E.Murray
Quercus chrysophyllus Kellogg (synonym) 1 literature reference for Quercus chrysophyllus Kellogg
Quercus crassipocula Torr. (synonym) 1 literature reference for Quercus crassipocula Torr.
Quercus fulvescens Kellogg (synonym) 1 literature reference for Quercus fulvescens Kellogg
Quercus oblongifolia R.Br. (synonym) 1 literature reference for Quercus oblongifolia R.Br.
Quercus wilcoxii Rydb. (synonym) 1 literature reference for Quercus wilcoxii Rydb.
Common names: -
Classification:
Plantae
Phylum Magnoliophyta
Class Magnoliopsida
Order Fagales
Family Fagaceae
Genus Quercus
Distribution: W. Oregon to New Mexico and Mexico (Baja California Norte, NW. Chihuahua)
Additional data: -
Source database: World Checklist of Selected Plant Families, 27 Nov 2009
Latest taxonomic scrutiny: Govaerts R., 11-Nov-2003
Online resource: http://apps.kew.org/wcsp/namedetail.do?accepted_id=172147&repSynonym_id=-9998&name_id=172147&status=true
CoL taxon LSID: urn:lsid:catalogueoflife.org:taxon:25d2a212-60a7-102d-be47-00304854f810:ac2010