Omphalia involuta subsp. truncigena (Pers.) Gray Dataset GBIF Backbone Taxonomy Rank SUBSPECIES Classification kingdom Fungi phylum Basidiomycota class Agaricomycetes order Boletales family Paxillaceae genus Paxillus species Paxillus involutus Name Homonyms Omphalia involuta var. truncigena (Pers.) Gray Omphalia involuta subsp. truncigena (Pers.) Gray