Sphaeronema helvellae (P.Karst.) Jacz. Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Fungi phylum Ascomycota class Sordariomycetes order Melanosporales family Ceratostomataceae genus Melanospora species Melanospora karstenii Name Homonyms Sphaeronema helvellae (P.Karst.) Jacz.