Quercus grahamii Hort.Hafn. Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Tracheophyta class Magnoliopsida order Fagales family Fagaceae genus Quercus species Quercus grahamii Name Homonyms Quercus grahamii Benth. Quercus grahamii Hort.Hafn. ex A.DC., 1864 Quercus grahamii Hort.Hafn.