Polygonum bistorta subsp. bistorta Dataset GBIF Backbone Taxonomy Rank SUBSPECIES Classification kingdom Plantae phylum Tracheophyta class Magnoliopsida order Caryophyllales family Polygonaceae genus Bistorta species Bistorta officinalis Name Homonyms Polygonum bistorta var. bistorta Polygonum bistorta subsp. bistorta