Trematodon ambiguus subsp. longicollis (Michx.) Arn. Dataset GBIF Backbone Taxonomy Rank SUBSPECIES Classification kingdom Plantae phylum Bryophyta class Bryopsida order Dicranales family Bruchiaceae genus Trematodon species Trematodon longicollis Name Homonyms Trematodon ambiguus var. longicollis (Michx.) Arn. Trematodon ambiguus subsp. longicollis (Michx.) Arn.