San Diego bursage Asteraceae Ambrosia chenopodiifolia
Leaf:Alternate, simple, evergreen, ovate, 1 to 1 1/2 inches, coarse serrate or toothed, nearly lobed, green above and covered in white pubescence, pale below, drought deciduous.
Flower:Dull yellow-green, in small clusters borne on a spike, March to June.
Fruit:A spiny round bur with slender hooked spines, 1/2 inch in diameter.
Twig:Green to reddish brown with white pubescence, brittle, narrow leaf scars, resinous or sticky.
Bark:Reddish brown and becoming smooth and shiny, later becoming somewhat scaly or shallowly ridged and furrowed.
Form:A gangling, sprawling shrub to 2 feet tall.