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swamp loosestrife

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Definition of swamp loosestrife

: a woody perennial marsh herb (Decodon verticillatus) of the family Lythraceae of eastern North America having opposite or whorled lanceolate leaves and magenta flowers in axillary clusters

— called also swamp willow

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“Swamp loosestrife.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/swamp%20loosestrife. Accessed 28 Feb. 2021.

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