Usnea ceratina var. incurvescens Arnold Dataset GBIF Backbone Taxonomy Rank VARIETY Classification kingdom Fungi phylum Ascomycota class Lecanoromycetes order Lecanorales family Parmeliaceae genus Usnea species Usnea ceratina Name Homonyms Usnea ceratina var. incurvescens Arnold ex H.Olivier Usnea ceratina f. incurvescens (Arnold) H.Olivier Usnea ceratina subsp. incurvescens (Arnold) H.Olivier Usnea ceratina subsp. incurvescens (Arnold ex H.Olivier) Motyka Usnea ceratina var. incurvescens Arnold