Knotweed (Polygonum) -

• Common Knotweed (Plebeium)
  
• Poke Knotweed (Phytolaccifolium)
  
• Spotted Ladysthumb (Persicaria)
  
• Asiatic Tearthumb (Perfoliatum)
  
• Manyleg Knotweed (Polycnemoides)
  
• Milkwort Knotweed (Polygaloides)
  Fruitleaf Knotweed, Whitemargin Knotweed, Kellogg's Knotweed
• Ray's Knotweed (Raii)
  
• Dotted Smartweed (Punctatum)
  Dotted Smartweed, Dotted Smartweed
• Cultivated Knotweed (Polystachyum)
  
• Pennsylvania Smartweed (Pensylvanicum)
  
• Bellard's Smartweed (Patulum)
  
• Tuber Fleeceflower (Multiflorum)
  
• Pygmy Smartweed (Minus)
  
• Broadleaf Knotweed (Minimum)
  
• Kiss Me Over The Garden Gate (Orientale)
  
• Oxyspermum (Oxyspermum)
  
• Parry's Knotweed (Parryi)
  
• Knotweed (Paronychioides)
  
• Beach Knotweed (Paronychia)
  
• Bushy Knotweed (Ramosissimum)
  Bushy Knotweed, Bushy Knotweed
• Stout Smartweed (Robustius)
  
• Field Smartweed (Segetum)
  
• Nepalese Smartweed (Nepalense)
  
• Denseflower Knotweed (Glabrum)
  
• Bog Smartweed (Setaceum)
  
• Striped Knotweed (Striatulum)
  
• Alpine Bistort (Viviparum)
  
• Jumpseed (Virginianum)
  
• Pleatleaf Knotweed (Tenue)
  
• Fowler's Knotweed (Fowleri)
  
• Erect Knotweed (Erectum)
  
• Arrowleaf Tearthumb (Sagittatum)
  
• Shasta Knotweed (Shastense)
  
• Giant Knotweed (Sachalinense)
  
• Knotweed (Salicifolium)
  
• Climbing False Buckwheat (Scandens)
  Climbing False Buckwheat, Climbing False Buckwheat, Climbing False Buckwheat
• Equisetiforme (Equisetiforme)
  
• Douglas' Knotweed (Douglasii)
  Austin Knotweed, Douglas' Knotweed, Engelmann's Knotweed
• Japanese Knotweed (Cuspidatum)
  
• Branched Tearthumb (Meisnerianum)
  Branched Tearthumb
• Marin Knotweed (Marinense)
  
• American Bistort (Bistortoides)
  
• Meadow Bistort (Bistorta)
  Meadow Bistort, Meadow Bistort
• Bidwell's Knotweed (Bidwelliae)
  
• Bohemian Knotweed (Bohemicum)
  
• Bolander's Knotweed (Bolanderi)
  
• Oriental Ladysthumb (Caespitosum)
  Oriental Ladysthumb, Oriental Ladysthumb
• Box Knotweed (Buxiforme)
  
• Bunge's Smartweed (Bungeanum)
  
• Narrowleaf Knotweed (Bellardii)
  
• Bukhara Fleeceflower (Baldschuanicum)
  
• Water Knotweed (Amphibium)
  Longroot Smartweed, Water Smartweed
• Alaska Wild Rhubarb (Alpinum)
  
• Tapertip Smartweed (Acuminatum)
  
• European Knotweed (Arenarium)
  
• Oval-leaf Knotweed (Arenastrum)
  
• Prostrate Knotweed (Aviculare)
  
• Halberdleaf Tearthumb (Arifolium)
  
• Silversheath Knotweed (Argyrocoleon)
  
• California Knotweed (Californicum)
  
• Bellflower Smartweed (Campanulatum)
  
• Hairy Smartweed (Hirsutum)
  
• Hickman's Knotweed (Hickmanii)
  
• Oddsepal Knotweed (Heterosepalum)
  
• Marshpepper Knotweed (Hydropiper)
  
• Swamp Smartweed (Hydropiperoides)
  
• Narrowpoint Knotweed (Leptocarpum)
  
• Curlytop Knotweed (Lapathifolium)
  
• Fringed Knotweed (Lacerum)
  
• Rupturewort (Herniarioides)
  
• Seaside Knotweed (Glaucum)
  
• Carey's Smartweed (Careyi)
  
• Davis' Knotweed (Davisiae)
  
• Pinkhead Smartweed (Capitatum)
  
• Cascade Knotweed (Cascadense)
  
• Alaska Knotweed (Caurianum)
  
• Black Bindweed (Convolvulus)
  Black Bindweed, Black Bindweed
• Fringed Black Bindweed (Cilinode)
  
• Chinese Knotweed (Chinense)
  
• Leathery Knotweed (Achoreum)