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rosinweed

Definitions of rosinweed
  1. noun
    North American perennial having a resinous odor and yellow flowers
    synonyms: Silphium laciniatum
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    type of:
    compass flower, compass plant
    any of several plants having leaves so arranged on the axis as to indicate the cardinal points of the compass
  2. noun
    any of various western American plants of the genus Grindelia having resinous leaves and stems formerly used medicinally; often poisonous to livestock
    synonyms: gum plant, gumweed, tarweed
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    types:
    Grindelia robusta
    perennial gumweed of California and Baja California
    Grindelia squarrosa, curlycup gumweed
    perennial gumweed of western and central North America
    type of:
    herb, herbaceous plant
    a plant lacking a permanent woody stem; many are flowering garden plants or potherbs; some having medicinal properties; some are pests
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