Any of various resinous glandular plants of the genus Madia; of western North and South America.
2.
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, rosinweed.
... of the shooting-star, swung at the ends of strong and delicate stems. In the shadows the chocolate lilies and trilliums dully glinted, and flag flowers trooped in the sunlight. The resinous paradisiacal smell of tarweed and bay-tree refreshed us, and the wonder of life was a something strong and ... — IT and Other Stories • Gouverneur Morris