Persicaria

Persicaria is a genus of herbaceous flowering plants in the knotweed family, Polygonaceae. Plants of the genus are known commonly as knotweeds. or smartweeds.Persicaria. Flora of North America. It has a cosmopolitan distribution, with species occurring nearly worldwide.Persicaria. New South Wales Flora Online. National Herbarium, Royal Botanic Garden, Sydney.

References

Further reading
Kong M.-J & S.-P Hong 2018. Comparative achene morpohology of Persicaria sect Cephalophilon and related taxa (Polygonaceae). Korean J Pl Taxon 48(2):134-142

Other websites

Kim S and MJ Donogue 2008 Molecular phylogeny of Persicaria (Persicarieae) Polygonaceae Syst Bot. 33:77-86

Category:Polygonaceae