Phascum cuspidatum subsp. cuspidatum Dataset GBIF Backbone Taxonomy Rank SUBSPECIES Classification kingdom Plantae phylum Bryophyta class Bryopsida order Pottiales family Pottiaceae genus Tortula species Tortula acaulon Name Homonyms Phascum cuspidatum subsp. cuspidatum Phascum cuspidatum var. cuspidatum