Helotium macrosporum Velen. Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Fungi phylum Ascomycota class Leotiomycetes order Helotiales family Helotiaceae genus Hymenoscyphus species Hymenoscyphus fucatus Name Homonyms Helotium macrosporum Velen. Helotium macrosporum Peck Helotium macrosporum Sacc.