Prolific/invasive
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Phalaris arundinacea (Reed canary grass)
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Phragmites australis (Norfolk reed)
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Physostegia virginiana (Obedient plant)
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Ranunculus lingua (Greater spearwort)
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Rumex sanguineus (Red vein dock)
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Sagittaria graminea (Oar leaved arrowhead)
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Sagittaria sagittifolia leucopetala (Japanese Arrowhead)
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Saururus cernuus (Lizard’s tail)
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Sparganium emersum (Unbranched Bur-reed)
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Sparganium erectum (Branched Bur Reed)
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Stachys palustris (Marsh Woundwort)
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Stratiotes aloides (Water soldiers)
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