Merulius retirugus (Bull.) Pers. Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Fungi phylum Basidiomycota class Agaricomycetes order Agaricales family Hygrophoraceae genus Arrhenia species Arrhenia retiruga Name Homonyms Merulius retirugus (Bull.) Schumach. Merulius retirugus (Bull.) Pers.