Buellia dubyana var. nigrescens Müll.Arg., 1872 Dataset GBIF Backbone Taxonomy Rank VARIETY Classification kingdom Fungi phylum Ascomycota class Lecanoromycetes order Caliciales family Physciaceae genus Rinodinella species Rinodinella controversa Name Homonyms Buellia dubyana var. nigrescens Müll.Arg., 1872