Polygonum hippopotami Ehrenb. Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Tracheophyta class Magnoliopsida order Caryophyllales family Polygonaceae genus Persicaria species Persicaria glabra Name Homonyms Polygonum hippopotami Ehrenb. ex Meisn. Polygonum hippopotami Ehrenb.