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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 oxyspermum C.A. Mey. & Bunge ex Ledeb. – sharpfruit knotweed |
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Direct Children: |
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| Subspecies | Polygonum oxyspermum ssp. oxyspermum C.A. Mey. & Bunge ex Ledeb.
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| Subspecies | Polygonum oxyspermum ssp. raii (Bab.) D.A. Webb & Chater
– Ray's knotweed | |
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