Helotium clavus var. grandis (Boud.) Dennis Dataset GBIF Backbone Taxonomy Rank VARIETY Classification kingdom Fungi phylum Ascomycota class Leotiomycetes order Helotiales family Tricladiaceae genus Cudoniella species Cudoniella clavus Name Homonyms Helotium clavus var. grandis Boud. Helotium clavus var. grandis (Boud.) Dennis