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| Kingdom | Plantae
– plantes, Planta, Vegetal, plants |
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| Subkingdom | Viridiplantae
– green plants |
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| Infrakingdom | Streptophyta
– land plants |
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| Superdivision | Embryophyta
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| Division | Tracheophyta
– vascular plants, tracheophytes |
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| Subdivision | Spermatophytina
– spermatophytes, seed plants, phanérogames |
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| Class | Magnoliopsida
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| Superorder | Caryophyllanae
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| Order | Caryophyllales
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| Family | Polygonaceae
– knotweed, renouées, buckwheat |
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| Genus | Polygonum L.
– smartweed species, knotweed |
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| Species | Polygonum aviculare L. – prostrate knotweed, yard knotweed |
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Direct Children: |
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| Subspecies | Polygonum aviculare ssp. aviculare L.
– common knotweed | |
| Subspecies | Polygonum aviculare ssp. boreale (Lange) Karlsson
– northern knotweed | |
| Subspecies | Polygonum aviculare ssp. buxiforme (Small) Costea & Tardif
– box knotweed, American knotweed | |
| Subspecies | Polygonum aviculare ssp. depressum (Meisn.) Arcang.
– oval-leaf knotweed, renouée à petits fruits, common knotweed | |
| Subspecies | Polygonum aviculare ssp. neglectum (Besser) Arcang.
– renouée négligée, narrow-leaf knotweed | |
| Subspecies | Polygonum aviculare ssp. rurivagum (Jordan ex Boreau) Berher
– narrow-leaf knotweed | |
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