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
| Additional Range Information:
Ambrosia dumosa is native to North America.
Range may be expanded by planting.
See states reporting white bursage.
| External Links:
USDA Plants Database
|© Copyright 2016, Virginia Tech|
Dept. of Forest Resources
and Environmental Conservation,
all rights reserved.
Photos and text by: John Seiler,
Edward Jensen, Alex Niemiera,
and John Peterson