white bursage Asteraceae Ambrosia dumosa (A. Gray) Payne Listen to the Latin symbol: AMDU2 Other Fact Sheets
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
form1 map
Additional Range Information:
Ambrosia dumosa is native to North America.
Range may be expanded by planting.
See states reporting white 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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