Usnea strigosa var. rubiginea (Michx.) I.I.Tav. Dataset GBIF Backbone Taxonomy Rank VARIETY Classification kingdom Fungi phylum Ascomycota class Lecanoromycetes order Lecanorales family Parmeliaceae genus Usnea species Usnea strigosa Name Homonyms Usnea strigosa var. rubiginea (Michx.) I.I.Tav.