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Any of several resinous western North American plants of the genus Madia and closely related genera of the composite family, having yellow flower heads and sticky aromatic foliage.
(Plants) a generic term for plants belonging to the sunflower family because of their resinous secretion and pungent scent
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|Noun||1.||tarweed - any of various resinous glandular plants of the genus Madia; of western North and South America|
genus Madia, Madia - genus of sticky herbs with yellow flowers open in morning or evening but closed in bright light
Chile tarweed, madia oil plant, Madia sativa, melosa - South American herb with sticky glandular foliage; source of madia oil
|2.||tarweed - 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