Lecanora frustulosa var. ludwigii (Ach.) Th.Fr. Dataset GBIF Backbone Taxonomy Rank VARIETY Classification kingdom Fungi phylum Ascomycota class Lecanoromycetes order Lecanorales family Lecanoraceae genus Lecanora species Lecanora frustulosa Name Homonyms Lecanora frustulosa var. ludwigii (Ach.) Th.Fr.