(n.) A name given to several resinous-glandular composite plants of California, especially to the species of Grindelia, Hemizonia, and Madia.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). tarweed. Retrieved September 23, 2026, from http://smartdefine.org/tarweed/definitions/2070561 |
| Chicago | Webster's. 2011. "tarweed" http://smartdefine.org/tarweed/definitions/2070561 (accessed September 23, 2026). |
| Harvard | Webster's 2011, tarweed, Smart Define, viewed 23 September, 2026, <http://smartdefine.org/tarweed/definitions/2070561>. |
| MLA | Webster's. "tarweed" 28 May 2011. Web. 23 September 2026. <http://smartdefine.org/tarweed/definitions/2070561> |