Categories red & pink flowers | white flowers | Wildflowers | Persicaria lapathifolia Persicaria lapathifolia Common name(s): Pale or Pink Knotweed, Pale Smartweed and others Synonyme(s): Polygonum lapathifolium Family: Polygonaceae Origin: Africa, Asia, Europe More infos: N/A Related plants:Buckwheat Fagopyrum esculentum Fallopia baldschuanica Fallopia convolvulus Fallopia japonica Muehlenbeckia complexa Persicaria affinis Persicaria amplexicaulis Persicaria capitata Persicaria odorata Polygonum aviculare Rumex acetosa Rumex obtusifolius Rumex sanguineus