triangleleaf bursage Asteraceae Ambrosia deltoidea (Torr.) Payne Listen to the Latin symbol: AMDE4 Other Fact Sheets
Leaf: Alternate, simple, evergreen, distinctly triangular or with a wedge-shaped base, 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, present in late winter to early spring.
Fruit: A spiny round bur with slender spines, 1/2 inch in diameter.
Twig: Reddish brown with white pubescence, brittle, narrow leaf scars, resinous.
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.

Looks like: San Diego bursage
leaf flower fruit twig bark form1 map
Additional Range Information:
Ambrosia deltoidea is native to North America.
Range may be expanded by planting.
See states reporting triangleleaf bursage.
External Links:
USDAFS Additional Silvics
USDA Plants Database
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Photos and text by: John Seiler,
Edward Jensen, Alex Niemiera,
and John Peterson
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