Ustilago segetum var. mays-zeae (DC.) Dataset GBIF Backbone Taxonomy Rank VARIETY Classification kingdom Fungi phylum Basidiomycota class Ustilaginomycetes order Ustilaginales family Ustilaginaceae genus Mycosarcoma species Mycosarcoma maydis Name Homonyms Ustilago segetum var. mays-zeae (DC.) Ustilago segetum subsp. mays-zeae DC., 1805