Helotium agaricinum (Berk.) W.Phillips Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Fungi phylum Ascomycota class Leotiomycetes order Leotiales family Tympanidaceae genus Vexillomyces species Vexillomyces atrovirens Name Homonyms Helotium agaricinum (Berk.) W.Phillips Helotium agaricinum (Carmich. ex Berk.) Berk.