Species: ~150
Geography:
Species:
- Polygonum achoreum
- Polygonum acuminata
- Polygonum acuminatum - (tapertip smartweed).
- Polygonum arenarium
- Polygonum arenastrum – (small-leaved knotgrass).
- Polygonum argyrocoleon Steud. ex Kunze
- Polygonum arifolium
- Polygonum aviculare L. – (common knotgrass - Echter Vogelknöterich).
- Polygonum bellardii
- Polygonum bidwelliae
- Polygonum bistortoides
- Polygonum bolanderi
- Polygonum boreale
- Polygonum brasiliensis
- Polygonum bungeanum - (Bunge's smartweed).
- Polygonum buxiforme
- Polygonum caespitosum
- Polygonum californicum – (California knotweed).
- Polygonum careyi - (Carey's smartweed).
- Polygonum cascadense
- Polygonum caurianum
- Polygonum chinense
- Polygonum coccineum
- Polygonum cognatum – (Indian knotgrass).
- Polygonum davisiae
- Polygonum densiflorum
- Polygonum dibotrys
- Polygonum douglasii – (Douglas' knotweed)
- Polygonum equisetiforme Sm., – (Schachtelhalmartiger Knöterich).
- Polygonum erectum L., (Aufrechter Knöterich).
- Polygonum flaccidum Meissn.
- Polygonum foliosum
- Polygonum forrestii
- Polygonum fowleri
- Polygonum franktonii
- Polygonum glaucum
- Polygonum griffithii
- Polygonum herniarioides
- Polygonum heterosepalum – (dwarf desert knotweed).
- Polygonum hickmanii
- Polygonum hirsutum
- Polygonum hongkongensis
- Polygonum hudsonianum
- Polygonum hydropiperoides - (swamp smartweed).
- Polygonum idaeum
- Polygonum lacerum
- Polygonum lanigerum
- Polygonum marinense
- Polygonum maritimum – (sea knotgrass).
- Polygonum meisneranum
- Polygonum meisnerianum
- Polygonum minimum – (broadleaf knotweed).
- Polygonum multiflorum
- Polygonum nepalense Meisn., (Nepalesischer Knöterich).
- Polygonum newberryi - (Newberry knotweed).
- Polygonum oxyspermum – (Ray's knotgrass).
- Polygonum paleaceum Wall. ex Hook. f.
- Polygonum paronychia
- Polygonum paronychioides
- Polygonum parryi
- Polygonum patulum - (Bellard's smartweed).
- Polygonum perfoliatum – (mile-a-minute weed).
- Polygonum phytolaccifolium
- Polygonum plebeium
- Polygonum polycnemoides
- Polygonum polycnenoides
- Polygonum polygaloides Meisn.
- Polygonum punctatum - (dotted smartweed).
- Polygonum raii = Polygonum oxyspermum).
- Polygonum ramosissimum Michx.
- Polygonum robustius - (stout smartweed).
- Polygonum rurivagum
- Polygonum salicifolium
- Polygonum scoparium
- Polygonum segetum Kunth, - (field smartweed).
- Polygonum senticosum (Meisn.) Franch. & Sav.
- Polygonum setaceum - (bog smartweed).
- Polygonum shastense
- Polygonum striatulum
- Polygonum tenue
Species (Polygonum -> Fagopyrum):
- Polygonum fagopyrum (Fagopyrum esculentum) – buckwheat
Species (Polygonum -> Fallopia):
- Polygonum aubertii = Polygonum baldschuanicum
- Polygonum baldschuanicum (Fallopia baldschuanica) (Fallopia aubertii, Bilderdykia aubertii, Bilderdykia balschuanicum) – Russian vine
- Polygonum cilinode (Fallopia cilinodis, Bilderdykia cilinodis) – fringed black bindweed
- Polygonum convolvulus (Fallopia convolvulus) – Black Bindweed, wild buckwheat
- Polygonum cuspidatum = Polygonum japonicum - Japanese knotweed
- Polygonum dumetorum (Fallopia dumetorum) – copse bindweed
- Polygonum japonicum (Fallopia japonica, Reynoutria japonica) – Japanese knotweed
- Polygonum multiflorum (Fallopia multiflora)
- Polygonum sachalinense (Fallopia sachalinensis, Reynoutria sachalinensis) – giant knotweed
- Polygonum scandens (Fallopia scandens)
Species (Polygonum -> Persicaria):
- Polygonum affine (Persicaria affinis)
- Polygonum alatum (Persicaria alata)
- Polygonum alpinum (Persicaria alpina)
- Polygonum amphibium (Persicaria amphibia)
- Polygonum amplexicaule (Persicaria amplexicaulis)
- Polygonum bistorta (Persicaria bistorta)
- Polygonum campanulatum (Persicaria campanulata)
- Polygonum capitatum (Persicaria capitata)
- Polygonum emodi (Persicaria emodi)
- Polygonum filiforme (Persicaria virginiana)
- Polygonum hydropiper (Persicaria hydropiper)
- Polygonum lapathifolium (Persicaria lapathifolia)
- Polygonum longisetum (Persicaria longiseta)
- Polygonum macrophyllum (Persicaria macrophylla)
- Polygonum microcephalum (Persicaria microcephala)
- Polygonum milletii (Persicaria milletii)
- Polygonum minus (Persicaria minor)
- Polygonum mite (Persicaria mitis, Persicaria laxiflora)
- Polygonum molle (Persicaria mollis)
- Polygonum nepalense (Persicaria nepalensis)
- Polygonum odoratum (Persicaria odorata)
- Polygonum orientale (Persicaria orientalis)
- Polygonum pensylvanicum (Persicaria pensylvanica)
- Polygonum persicaria (Persicaria maculosa)
- Polygonum polymorphum (Persicaria polymorpha)
- Polygonum polystachyum = Polygonum wallichii
- Polygonum runciforme (Persicaria runcinata)
- Polygonum sagittatum (Persicaria sagittata)
- Polygonum tenuicaule (Persicaria tenuicaulis)
- Polygonum tinctorium Ait.), (Persicaria tinctoria)
- Polygonum vaccinifolium (Persicaria vaccinifolia)
- Polygonum virginianum (Persicaria virginiana)
- Polygonum viviparum (Persicaria vivipara)
- Polygonum wallichii (Persicaria wallichii)
- Polygonum weyrichii (Persicaria weyrichii)
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