Quercus ×longifolia K.Koch Dataset GBIF Backbone Taxonomy Rank SPECIES Published in Linnaea 22: 327 (1849) Classification kingdom Plantae phylum Tracheophyta class Magnoliopsida order Fagales family Fagaceae genus Quercus species Quercus mannifera Name Homonyms Quercus longifolia Raf. Quercus ×longifolia K.Koch Quercus longifolia C.Koch Quercus longifolia Liebm.