white bursage Asteraceae Ambrosia
dumosa (A. Gray) Payne
Leaf: Alternate, may be simple or deeply lobed or multi-pinnately compound, coarse serrate or toothed, green above and below but covered in dense pale pubescence, minute, drought deciduous and often absent.
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, to 3/8 inch long.
Twig: Covered in gray pubescence, slender, stiff, narrow leaf scars.
Bark: Reddish brown and becoming smooth and shiny.
Form: A rounded shrub to less than 3 feet tall.
Looks like: canyon ragweed - San Diego bursage - triangleleaf bursage