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Any of various plants of the genus Grindelia in the composite family, native to the Americas, having yellow, rayed flower heads and sticky leaves, stems, and bracts. Also called gum plant.
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|Noun||1.||gumweed - any of various western American plants of the genus Grindelia having resinous leaves and stems formerly used medicinally; often poisonous to livestock|
Grindelia robusta - perennial gumweed of California and Baja California