eupatorium purpureum

from WordNet (r) 3.0 (2006)

Eupatorium purpureum
    n 1: North American herb having whorled leaves and terminal
         clusters of flowers spotted with purple [syn: {Joe-Pye
         weed}, {purple boneset}, {trumpet weed}, {marsh milkweed},
         {Eupatorium purpureum}]

from The Collaborative International Dictionary of English v.0.48

Joe-Pye weed \Joe`-Pye" weed`\ (Bot.)
   A tall composite plant of the genus {Eupatorium} ({Eupatorium
   purpureum}), with purplish flowers, and whorled leaves.
   [1913 Webster]

from The Collaborative International Dictionary of English v.0.48

Trumpetweed \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.
       [1913 Webster]

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