Cronartium quercus (Brond.) J.Schröt. Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Fungi phylum Basidiomycota class Pucciniomycetes order Pucciniales family Cronartiaceae genus Cronartium species Cronartium quercuum Name Homonyms Cronartium quercus (Brond.) J.Schröt. ex Arthur Cronartium quercus (Brond.) J.Schröt.