rosinweed

(räzən wēd′)

noun

  1. any of a genus (Silphium) of North American plants of the composite family that have resinous juice, sticky foliage, and strong odors, including the compass plant
  2. any of several similar resinous plants

See rosinweed in American Heritage Dictionary 4

noun
Any of several North American plants of the genera Grindelia or Silphium, especially the compass plant, the cup plant, and the gum plant, having a resinous juice.
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