Polygonum affine Stephan Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Tracheophyta class Magnoliopsida order Caryophyllales family Polygonaceae genus Polygonum species Polygonum cognatum Name Homonyms Polygonum affine Stephan ex Spreng. Polygonum affine D.Don Polygonum affine Wall. Polygonum affine Stephan