vervain thoroughwort

noun

: a rough-foliaged perennial herb (Eupatorium pilosum) of the eastern U.S. having opposite mostly oblong leaves and an open cymose cluster of white flower heads

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Cite this Entry

“Vervain thoroughwort.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/vervain%20thoroughwort. Accessed 16 Nov. 2024.

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