Polytrichum longisetum Sw. Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Bryophyta class Polytrichopsida order Polytrichales family Polytrichaceae genus Polytrichum species Polytrichum longisetum Name Homonyms Polytrichum longisetum Sw. ex Brid. Polytrichum longisetum Sw. Polytrichum longisetum Hook.