Physcia caesia f. teretiuscula (Ach.) Cromb. Dataset GBIF Backbone Taxonomy Rank FORM Classification kingdom Fungi phylum Ascomycota class Lecanoromycetes order Caliciales family Physciaceae genus Physcia species Physcia dubia Name Homonyms Physcia caesia var. teretiuscula (Ach.) Nyl. Physcia caesia f. teretiuscula (Ach.) Harm. Physcia caesia f. teretiuscula (Ach.) Cromb.