canyon ragweed Asteraceae Ambrosia ambrosioides (Cav.) Payne   symbol: AMAM2
	Leaf: Alternate, simple, evergreen, elongated triangular to lance-shaped, coarse serrate or toothed, green above and below but covered in pale pubescence, drought deciduous. Flower: Dull yellow-green, in small clusters borne on a spike, present in late winter to early spring. Fruit: A spiny bur with slender spines, 1 inch long. Twig: Reddish brown with white pubescence, stout, brittle, narrow leaf scars. Bark: Reddish brown and becoming smooth and shiny. Form: A gangling, sprawling shrub to 6 feet.
	No range map exists for this species. See a map of the states in which Ambrosia ambrosioides can be found (opens a new window). USDA Plants Database Ambrosia ambrosioides is native to North America.