Bryum caespiticium var. warneum Schwägr. Dataset GBIF Backbone Taxonomy Rank VARIETY Classification kingdom Plantae phylum Bryophyta class Bryopsida order Bryales family Bryaceae genus Ptychostomum species Ptychostomum warneum Name Homonyms Bryum caespiticium var. warneum Schwägr. ex Steud. Bryum caespiticium var. warneum Schwägr.