Polygonum patulum f. gracilius (Ledeb.) I.Grint. Dataset GBIF Backbone Taxonomy Rank FORM Classification kingdom Plantae phylum Tracheophyta class Magnoliopsida order Caryophyllales family Polygonaceae genus Polygonum species Polygonum patulum Name Homonyms Polygonum patulum f. gracilius (Ledeb.) I.Grint. Polygonum patulum var. gracilius (Ledeb.) Rouy Polygonum patulum subsp. gracilius (Ledeb.) I.Grint.