Quercus ×hypophaeos Booth Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Tracheophyta class Magnoliopsida order Fagales family Fagaceae genus Quercus species Quercus brittonii Name Homonyms Quercus ×hypophaeos Booth ex Koehne Quercus ×hypophaeos Booth Quercus hypophaeos G.Kirchn.