Knotweed (Polygonum)
Every species of the genus Polygonum in the catalogue.
- Knotgrass (Polygonum aviculare)
- Meadow bistort (Polygonum bistorta)
- European knotweed (Polygonum arenarium)
- Narrowleaf knotweed (Polygonum bellardii)
- Alaska Wild Rhubarb (Polygonum alaskanum)
- Alaska wild rhubarb (Polygonum alpinum)
- Water knotweed (Polygonum amphibium)
- Ovalleaf knotweed (Polygonum arenastrum)
- Joint Weed (Polygonum barbatum)
- American bistort (Polygonum bistortoides)
- Bunge's smartweed (Polygonum bungeanum)
- Water Smartweed (Polygonum coccineum)
- Polygonum conspicuum
- Black bindweed (Polygonum convolvulus)
- Polygonum divaricatum
- Douglas' knotweed (Polygonum douglasii)
- Polygonum dumetorum
- Horse-tail knotweed (Polygonum equisetiforme)
- Polygonum fugax
- Marshpepper knotweed (Polygonum hydropiper)
- Curlytop knotweed (Polygonum lapathifolium)
- Polygonum limosum
- Polygonum longisetum
- Polygonum maackianum
- Polygonum microcephalum
- Pygmy smartweed (Polygonum minus)
- Polygonum molle
- He Shou Wu (Polygonum multiflorum)
- Nepalese smartweed (Polygonum nepalense)
- Polygonum omerostromum
- Prince's Feather (Polygonum orientale)
- Asiatic tearthumb (Polygonum perfoliatum)
- Spotted ladysthumb (Polygonum persicaria)
- Polygonum polymorphum
- Cultivated knotweed (Polygonum polystachyum)
- Polygonum pubescens
- Polygonum rigidum
- Polygonum rumicifolium
- Polygonum runcinatum
- Giant Knotweed (Polygonum sachalinense)
- Knotweed (Polygonum salicifolium)
- Polygonum sibiricum
- Polygonum taquettii
- Polygonum thunbergii
- Polygonum tinctorium
- Polygonum truellum
- Jumpseed (Polygonum virginianum)
- Alpine bistort (Polygonum viviparum)
- Polygonum weyrichii
- Polygonum yokusaianum