Persicaria
| Persicaria | |
|---|---|
| Persicaria capitata | |
| Scientific classification | |
| Kingdom: | Plantae | 
| Clade: | Tracheophytes | 
| Clade: | Angiosperms | 
| Clade: | Eudicots | 
| Order: | Caryophyllales | 
| Family: | Polygonaceae | 
| Subfamily: | Polygonoideae | 
| Genus: | Persicaria Mill. 1754 | 
| Species | |
| See text | |
| Synonyms | |
| List 
 | |
Persicaria is a genus of herbaceous flowering plants in the knotweed family, Polygonaceae. Plants of the genus are known commonly as knotweeds: 436 or smartweeds. It has a cosmopolitan distribution, with species occurring nearly worldwide. The genus was segregated from Polygonum.