Joe-Pye weed Bot. A tall composite plant of the genus Eupatorium (Eupatorium purpureum), with purplish flowers, and whorled leaves.
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Trump·et·weed n. Bot. (a) An herbaceous composite plant (Eupatorium purpureum), often having hollow stems, and bearing purplish flowers in small corymbed heads. (b) The sea trumpet.
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Eupatorium purpureum
n : North American herb having whorled leaves and terminal
clusters of flowers spotted with purple [syn: Joe-Pye
weed, purple boneset, trumpet weed, marsh milkweed]