Tarweed

n.

1.

(Bot.) A name given to several resinous-glandular composite plants of California, esp. to the species of Grindelia, Hemizonia, and Madia.

Noun	1.	tarweed - any of various resinous glandular plants of the genus Madia; of western North and South America
	2.	tarweed - 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

Chile tarweed, genus Madia, herb, herbaceous plant, Madia, madia oil plant, Madia sativa, melosa