Barbula mutica var. rufescens (A.Jaeger) H.A.Crum Dataset GBIF Backbone Taxonomy Rank VARIETY Classification kingdom Plantae phylum Bryophyta class Bryopsida order Pottiales family Pottiaceae genus Acaulon species Acaulon muticum Name Homonyms Barbula mutica var. rufescens (A.Jaeger) H.A.Crum