Synonyms: Persicaria attenuata africana; Persicaria tomentosa (heterotypic); Polygonum adenophyllum; Polygonum krasseri; Polygonum madagascariense (homotypic); Polygonum poiretii madagascariense; Polygonum poiretii var. madagascariensis (homotypic); Polygonum pulchrum hallieri; Polygonum tomentosum (heterotypic); Polygonum tomentosum angustifolium; Polygonum tomentosum blepharanthum; Polygonum tomentosum brevipilum; Polygonum tomentosum eciliatum; Polygonum tomentosum glandulosum; Polygonum tomentosum limnogenes; Polygonum tomentosum sericeo-velutinum; Polygonum tomentosum var. limnogenes