Drepanocladus exannulatus var. acanthoclados G.Roth Dataset GBIF Backbone Taxonomy Rank VARIETY Classification kingdom Plantae phylum Bryophyta class Bryopsida order Hypnales family Calliergonaceae genus Sarmentypnum species Sarmentypnum tundrae Name Homonyms Drepanocladus exannulatus var. acanthoclados G.Roth