Bryum bimum var. atrotheca Renauld & Cardot Dataset GBIF Backbone Taxonomy Rank VARIETY Classification kingdom Plantae phylum Bryophyta class Bryopsida order Bryales family Bryaceae genus Ptychostomum species Ptychostomum pseudotriquetrum Name Homonyms Bryum bimum var. atrotheca Renauld & Cardot