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Species
Information
- skeletonleaf
bursage (burr ragweed)
- Ambrosia
tomentosa Nutt.
- USDA
Symbol: AMTO3
- Oregon
Noxious Weed Designation: A
- Pictures
ALERT: PLEASE CALL 1-866-INVADER IF YOU SUSPECT YOU HAVE FOUND THIS SPECIES
Identification: Perennial; flowers June to August. Grows 4 to 18 inches tall with extensive creeping rootstocks. Leaves lanceolate, coarsely toothed and deeply lobed. Flowers inconspicuous and yellow. Fruit a light brown bur with spines.
This species is not yet known to occur in Oregon.
Impacts: Skeletonleaf bursage grows in cultivated fields, pastures and waste areas in several western states and survives under varied soil moisture conditions.
Biological
Controls: Biological control agents are not used on "A" listed weeds in Oregon. If this weed is found in the state it will be managed for eradication or containment.
Oregon
Maps of Skeletonleaf Bursage Distribution
Links:
USDA
Plants Database information on skeletonleaf bursage
GRIN
Database information on skeletonleaf bursage
Oregon Department
of Agriculture information on skeletonleaf bursage
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