Polygonum intermedium Robert Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Tracheophyta class Magnoliopsida order Caryophyllales family Polygonaceae genus Polygonum species Polygonum roberti Name Homonyms Polygonum intermedium Kit. ex Rochel Polygonum intermedium Nutt. Polygonum intermedium Robert ex Loisel. Polygonum intermedium Nutt. ex S.Watson Polygonum ×intermedium Hy, 1896 Polygonum intermedium Ehrh. Polygonum intermedium Robert Polygonum intermedium Kit.