Phacidium perexiguum Roberge Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Fungi phylum Ascomycota class Leotiomycetes order Helotiales family Discinellaceae genus Naevala species Naevala perexigua Name Homonyms Phacidium perexiguum Roberge ex Desm. Phacidium perexiguum Roberge