Usnea incurvescens (Arnold ex H.Olivier) Motyka Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Fungi phylum Ascomycota class Lecanoromycetes order Lecanorales family Parmeliaceae genus Usnea species Usnea ceratina Name Homonyms Usnea incurvescens (Arnold ex H.Olivier) Motyka Usnea incurvescens (Arnold ex H.Olivier) Motyka ex B.de Lesd.