Gymnostomum calcareum var. brevifolium E.Bauer Dataset GBIF Backbone Taxonomy Rank VARIETY Classification kingdom Plantae phylum Bryophyta class Bryopsida order Pottiales family Pottiaceae genus Gymnostomum species Gymnostomum viridulum Name Homonyms Gymnostomum calcareum var. brevifolium Schimp. Gymnostomum calcareum var. brevifolium E.Bauer