All Species in Polygonum
- Alaska Knotweed (Polygonum humifusum subsp. caurianum)
- Beach Knotweed (Polygonum paronychia)
- Bellard's Smartweed (Polygonum patulum)
- Bidwell's Knotweed (Polygonum bidwelliae)
- Bolander's Knotweed (Polygonum bolanderi)
- Box Knotweed (Polygonum buxiforme)
- Broadleaf Knotweed (Polygonum minimum)
- Bushy Knotweed (Polygonum ramosissimum)
- California Knotweed (Polygonum californicum)
- Cascade Knotweed (Polygonum cascadense)
- Coastal Jointweed (Polygonum articulatum)
- Common Knotweed (Polygonum plebeium)
- Douglas' Knotweed (Polygonum douglasii)
- Erect Knotweed (Polygonum erectum)
- European Knotweed (Polygonum arenarium)
- Florida Jointweed (Polygonum basiramia)
- Fowler's Knotweed (Polygonum fowleri)
- Fringed Black Bindweed (Polygonum cilinode)
- Fringed Knotweed (Polygonum lacerum)
- Hairy Jointweed (Polygonum delopyrum)
- Hickman's Knotweed (Polygonum hickmanii)
- Knotweed (Polygonum oxyspermum)
- Knotweed (Polygonum paronychioides)
- Largeflower Jointweed (Polygonum nesomii)
- Largeleaf Jointweed (Polygonum smallianum)
- Leathery Knotweed (Polygonum achoreum)
- Manyleg Knotweed (Polygonum polycnemoides)
- Marin Knotweed (Polygonum marinense)
- Milkwort Knotweed (Polygonum polygaloides)
- Narrowleaf Knotweed (Polygonum bellardii)
- Narrowpoint Knotweed (Polygonum ramosissimum subsp. ramosissimum)
- October Flower (Polygonum polygamum)
- Oddsepal Knotweed (Polygonum heterosepalum)
- Oval-Leaf Knotweed (Polygonum arenastrum)
- Parks' Jointweed (Polygonum parksii)
- Parry's Knotweed (Polygonum parryi)
- Pleatleaf Knotweed (Polygonum tenue)
- Polygonum acerosum (Polygonum acerosum)
- Polygonum acetosum (Polygonum acetosum)
- Polygonum afghanicum (Polygonum afghanicum)
- Polygonum afromontanum (Polygonum afromontanum)
- Polygonum afyonicum (Polygonum afyonicum)
- Polygonum agreste (Polygonum agreste)
- Polygonum albanicum (Polygonum albanicum)
- Polygonum aleppicum (Polygonum aleppicum)
- Polygonum arenarium subsp. arenarium (Polygonum arenarium subsp. arenarium)
- Polygonum arenarium subsp. pulchellum (Polygonum arenarium subsp. pulchellum)
- Polygonum arussense (Polygonum arussense)
- Polygonum aschersonianum (Polygonum aschersonianum)
- Polygonum austiniae (Polygonum austiniae)
- Polygonum balansae (Polygonum balansae)
- Polygonum balansae subsp. balansae (Polygonum balansae subsp. balansae)
- Polygonum balansae subsp. battandieri (Polygonum balansae subsp. battandieri)
- Polygonum balansae subsp. elongatum (Polygonum balansae subsp. elongatum)
- Polygonum balansae subsp. induratum (Polygonum balansae subsp. induratum)
- Polygonum balansae subsp. rhizoxylon (Polygonum balansae subsp. rhizoxylon)
- Polygonum biaristatum (Polygonum biaristatum)
- Polygonum boreale (Polygonum boreale)
- Polygonum bornmuelleri (Polygonum bornmuelleri)
- Polygonum bowenkampii (Polygonum bowenkampii)
- Polygonum brasiliense (Polygonum brasiliense)
- Polygonum breviarticulatum (Polygonum breviarticulatum)
- Polygonum cappadocicum (Polygonum cappadocicum)
- Polygonum carinatum (Polygonum carinatum)
- Polygonum cashmirense (Polygonum cashmirense)
- Polygonum caspicum (Polygonum caspicum)
- Polygonum cedrorum (Polygonum cedrorum)
- Polygonum chaturbhujanum (Polygonum chaturbhujanum)
- Polygonum cognatum (Polygonum cognatum)
- Polygonum cognatum subsp. chitralicum (Polygonum cognatum subsp. chitralicum)
- Polygonum cognatum subsp. cognatum (Polygonum cognatum subsp. cognatum)
- Polygonum cognatum var. myrtillifolium (Polygonum cognatum var. myrtillifolium)
- Polygonum cognatum var. serpyllaceum (Polygonum cognatum var. serpyllaceum)
- Polygonum corrigioloides (Polygonum corrigioloides)
- Polygonum czukavinae (Polygonum czukavinae)
- Polygonum delfini (Polygonum delfini)
- Polygonum effusum (Polygonum effusum)
- Polygonum ekimianum (Polygonum ekimianum)
- Polygonum engelmannii (Polygonum engelmannii)
- Polygonum equisetiforme (Polygonum equisetiforme)
- Polygonum euxinum (Polygonum euxinum)
- Polygonum evenkiense (Polygonum evenkiense)
- Polygonum excelsius (Polygonum excelsius)
- Polygonum expansum (Polygonum expansum)
- Polygonum fibrilliferum (Polygonum fibrilliferum)
- Polygonum floribundum (Polygonum floribundum)
- Polygonum fowleri subsp. fowleri (Polygonum fowleri subsp. fowleri)
- Polygonum fowleri subsp. hudsonianum (Polygonum fowleri subsp. hudsonianum)
- Polygonum fragile (Polygonum fragile)
- Polygonum fusco-ochreatum (Polygonum fusco-ochreatum)
- Polygonum gabrielae (Polygonum gabrielae)
- Polygonum graminifolium (Polygonum graminifolium)
- Polygonum gussonei (Polygonum gussonei)
- Polygonum hohuanshanense (Polygonum hohuanshanense)
- Polygonum huichunense (Polygonum huichunense)
- Polygonum humifusum (Polygonum humifusum)
- Polygonum humifusum subsp. humifusum (Polygonum humifusum subsp. humifusum)
- Polygonum hyrcanicum (Polygonum hyrcanicum)
- Polygonum icaricum (Polygonum icaricum)
- Polygonum idaeum (Polygonum idaeum)
- Polygonum ilanense (Polygonum ilanense)
- Polygonum inflexum (Polygonum inflexum)
- Polygonum intramongolicum (Polygonum intramongolicum)
- Polygonum iranicum (Polygonum iranicum)
- Polygonum istanbulicum (Polygonum istanbulicum)
- Polygonum jaxarticum (Polygonum jaxarticum)
- Polygonum karacae (Polygonum karacae)
- Polygonum libani (Polygonum libani)
- Polygonum longiocreatum (Polygonum longiocreatum)
- Polygonum longipes (Polygonum longipes)
- Polygonum loshanense (Polygonum loshanense)
- Polygonum luzuloides (Polygonum luzuloides)
- Polygonum majus (Polygonum majus)
- Polygonum maritimum (Polygonum maritimum)
- Polygonum melihae (Polygonum melihae)
- Polygonum mersinicum (Polygonum mersinicum)
- Polygonum mesembricum (Polygonum mesembricum)
- Polygonum mezianum (Polygonum mezianum)
- Polygonum mirajabii (Polygonum mirajabii)
- Polygonum molliiforme (Polygonum molliiforme)
- Polygonum neglectum (Polygonum neglectum)
- Polygonum nikolai (Polygonum nikolai)
- Polygonum norvegicum (Polygonum norvegicum)
- Polygonum novoascanicum (Polygonum novoascanicum)
- Polygonum nuttallii (Polygonum nuttallii)
- Polygonum olivascens (Polygonum olivascens)
- Polygonum palaestinum (Polygonum palaestinum)
- Polygonum papillosum (Polygonum papillosum)
- Polygonum patuliforme (Polygonum patuliforme)
- Polygonum podlechii (Polygonum podlechii)
- Polygonum polygaloides subsp. confertiflorum (Polygonum polygaloides subsp. confertiflorum)
- Polygonum polygaloides subsp. esotericum (Polygonum polygaloides subsp. esotericum)
- Polygonum polygaloides subsp. kelloggii (Polygonum polygaloides subsp. kelloggii)
- Polygonum polygaloides subsp. polygaloides (Polygonum polygaloides subsp. polygaloides)
- Polygonum polygamum var. brachystachyum (Polygonum polygamum var. brachystachyum)
- Polygonum polygamum var. croomii (Polygonum polygamum var. croomii)
- Polygonum polygamum var. polygamum (Polygonum polygamum var. polygamum)
- Polygonum polyneuron (Polygonum polyneuron)
- Polygonum pringlei (Polygonum pringlei)
- Polygonum psammophilum (Polygonum psammophilum)
- Polygonum ramosissimum subsp. prolificum (Polygonum ramosissimum subsp. prolificum)
- Polygonum ramuliflorum (Polygonum ramuliflorum)
- Polygonum recumbens (Polygonum recumbens)
- Polygonum recumbens var. recumbens (Polygonum recumbens var. recumbens)
- Polygonum recumbens var. roylei (Polygonum recumbens var. roylei)
- Polygonum rigidum (Polygonum rigidum)
- Polygonum roberti (Polygonum roberti)
- Polygonum romanum (Polygonum romanum)
- Polygonum romanum subsp. balearicum (Polygonum romanum subsp. balearicum)
- Polygonum romanum subsp. gallicum (Polygonum romanum subsp. gallicum)
- Polygonum romanum subsp. romanum (Polygonum romanum subsp. romanum)
- Polygonum rottboellioides (Polygonum rottboellioides)
- Polygonum rottboellioides var. rottboellioides (Polygonum rottboellioides var. rottboellioides)
- Polygonum rottboellioides var. tibeticum (Polygonum rottboellioides var. tibeticum)
- Polygonum rupestre (Polygonum rupestre)
- Polygonum rurivagum (Polygonum rurivagum)
- Polygonum sabulosum (Polygonum sabulosum)
- Polygonum sajanense (Polygonum sajanense)
- Polygonum salebrosum (Polygonum salebrosum)
- Polygonum salsugineum (Polygonum salsugineum)
- Polygonum samsunicum (Polygonum samsunicum)
- Polygonum sarobiense (Polygonum sarobiense)
- Polygonum sawatchense (Polygonum sawatchense)
- Polygonum sawatchense subsp. oblivium (Polygonum sawatchense subsp. oblivium)
- Polygonum sawatchense subsp. sawatchense (Polygonum sawatchense subsp. sawatchense)
- Polygonum schistosum (Polygonum schistosum)
- Polygonum scoparium (Polygonum scoparium)
- Polygonum setosum (Polygonum setosum)
- Polygonum shiheziense (Polygonum shiheziense)
- Polygonum shuchengense (Polygonum shuchengense)
- Polygonum shuense (Polygonum shuense)
- Polygonum sivasicum (Polygonum sivasicum)
- Polygonum snijmaniae (Polygonum snijmaniae)
- Polygonum spergulariiforme (Polygonum spergulariiforme)
- Polygonum stypticum (Polygonum stypticum)
- Polygonum subaphyllum (Polygonum subaphyllum)
- Polygonum sumatranum (Polygonum sumatranum)
- Polygonum sylvaticum (Polygonum sylvaticum)
- Polygonum tachengense (Polygonum tachengense)
- Polygonum taiwanense (Polygonum taiwanense)
- Polygonum tenorei (Polygonum tenorei)
- Polygonum tenuissimum (Polygonum tenuissimum)
- Polygonum terzioglui (Polygonum terzioglui)
- Polygonum thymifolium (Polygonum thymifolium)
- Polygonum turkestanicum (Polygonum turkestanicum)
- Polygonum undulatum (Polygonum undulatum)
- Polygonum uniflorum (Polygonum uniflorum)
- Polygonum urnigera (Polygonum urnigera)
- Polygonum urumqiense (Polygonum urumqiense)
- Polygonum utahense (Polygonum utahense)
- Polygonum viale (Polygonum viale)
- Polygonum volchovense (Polygonum volchovense)
- Polygonum vvedenskyi (Polygonum vvedenskyi)
- Polygonum zakirovii (Polygonum zakirovii)
- Polygonum zaravschanicum (Polygonum zaravschanicum)
- Polygonum × pseudobellardii (Polygonum × pseudobellardii)
- Polygonum × pseudopulchellum (Polygonum × pseudopulchellum)
- Prostrate Knotweed (Polygonum aviculare)
- Ray's Knotweed (Polygonum raii)
- Rupturewort (Polygonum plebeium)
- Sandhill Jointweed (Polygonum fimbriatum)
- Seaside Knotweed (Polygonum glaucum)
- Shasta Knotweed (Polygonum shastense)
- Silversheath Knotweed (Polygonum argyrocoleon)
- Small's Jointweed (Polygonum dentoceras)
- Southern Jointweed (Polygonum americanum)
- Striped Knotweed (Polygonum striatulum)
- Tall Jointweed (Polygonum tenerum)