Synonyms: Persicaria barbata var. stagnina (homotypic); Persicaria hosseusii; Persicaria stagnina (homotypic); Polygonum barbatum (heterotypic); Polygonum barbatum var. stagninum (homotypic); Polygonum biscaticlium (homotypic); Polygonum bishirae (homotypic); Polygonum conspersum; Polygonum goyalpara (homotypic); Polygonum goyalparae (homotypic); Polygonum hamiltonii (heterotypic); Polygonum hispidum (heterotypic); Polygonum hornemanni; Polygonum stagninum (homotypic); Polygonum tomentosum (heterotypic)