Physcia caesia subsp. dubia Dataset GBIF Backbone Taxonomy Rank SUBSPECIES Classification kingdom Fungi phylum Ascomycota class Lecanoromycetes order Caliciales family Physciaceae genus Physcia species Physcia dubia Name Homonyms Physcia caesia var. dubia (Hoffm.) Th.Fr. Physcia caesia subsp. dubia Physcia caesia f. dubia (Hoffm.) Th.Fr.