Barbula comosa subsp. japonica Broth. Dataset GBIF Backbone Taxonomy Rank SUBSPECIES Classification kingdom Plantae phylum Bryophyta class Bryopsida order Pottiales family Pottiaceae genus Hydrogonium species Hydrogonium arcuatum Name Homonyms Barbula comosa var. japonica Broth. Barbula comosa subsp. japonica Broth.