Barbula mutica (Hedw.) Müll.Hal. Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Bryophyta class Bryopsida order Pottiales family Pottiaceae genus Acaulon species Acaulon muticum Name Homonyms Barbula mutica (Brid.) Brid. Barbula mutica (Hedw.) Müll.Hal. Barbula mutica (Brid.) Broth. Barbula mutica (Schultz) Kindb.