Quercus nigrescens Raf. Dataset GBIF Backbone Taxonomy Rank SPECIES Published in Alsogr. Amer.: 19 (1838) Classification kingdom Plantae phylum Tracheophyta class Magnoliopsida order Fagales family Fagaceae genus Quercus species Quercus alba Name Homonyms Quercus nigrescens Raf. Quercus nigrescens Houba, 1887