Sphacelotheca occidentalis Seym. Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Fungi phylum Basidiomycota class Ustilaginomycetes order Ustilaginales family Ustilaginaceae genus Sporisorium species Sporisorium occidentale Name Homonyms Sphacelotheca occidentalis Seym. ex G.P.Clinton Sphacelotheca occidentalis Seym.