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Polygonum (Genus) - knot grass ..Polygonum alpinum (Species) - Alaska wild rhubarb ..Polygonum amphibium (Species) - water knotweed ..Polygonum amplexicaule (Species) ..Polygonum arenastrum (Species) - common knotweed ..Polygonum aubertii (Species) - Chinese fleecevine ..Polygonum aviculare (Species) - prostrate knotweed ..[Polygonum baldschuanicum] (Species) - Bukhara fleeceflower ..Polygonum bistorta (Species) - meadow bistort ..Polygonum boreale (Species) - northern knotweed ..Polygonum cognatum (Species) ..[Polygonum convolvulus] (Species) - black bindweed ..[Polygonum cuspidatum] (Species) - fleeceflower ..[Polygonum cuspidatum x P. sachalinense] (Species) ..[Polygonum danubiale] (Species) ..[Polygonum dumetorum] (Species) ..[Polygonum fagopyrum] (Species) ..Polygonum foliosum (Species) ..[Polygonum heterophyllum] (Species) ..Polygonum hydropiper (Species) - annual smartweed ..Polygonum idaeum (Species) ..Polygonum lapathifolium (Species) - curltop ladysthumb ..Polygonum longipes (Species) ..Polygonum maritimum (Species) ..Polygonum minus (Species) ..Polygonum mite (Species) ..[Polygonum monspeliense] (Species) ..[Polygonum nodosum] (Species) ..Polygonum oxyspermum (Species) - sharpfruit knotweed ..Polygonum patulum (Species) - Bellard's smartweed ..Polygonum persicaria (Species) - ladysthumb ..Polygonum polystachyum (Species) - cultivated knotweed ..[Polygonum raii] (Species) - Ray's knotweed ..Polygonum rurivagum (Species) ..[Polygonum sachalinense] (Species) - giant knotweed ..Polygonum sagittatum (Species) - arrowleaf knotweed ..Polygonum salicifolium (Species) - knotweed ..[Polygonum scabrum] (Species) ..[Polygonum tataricum] (Species) ..Polygonum vivax (Species) ..Polygonum viviparum (Species) - alpine bistort ..[Polygonum aequale] (Species)

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Last updated: 28 Aug 2026