Parmelia diffusa (Weber) Rebent. Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Fungi phylum Ascomycota class Lecanoromycetes order Lecanorales family Parmeliaceae genus Parmeliopsis species Parmeliopsis ambigua Name Homonyms Parmelia diffusa (Weber) Rebent. Parmelia diffusa (Hoffm.) Sandst.