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Sturla, Gene

Ambrosia acanthicarpa

Ambrosia acanthicarpa Hook.

Flatspine Bur Ragweed, Annual Burweed, Annual Bursage, Hooker's Bur Ragweed, Western Sand-bur

Asteraceae (Aster Family)

Synonym(s): Franseria acanthicarpa, Gaertneria acanthicarpa

USDA Symbol: AMAC2

USDA Native Status: L48 (N), CAN (N)

From the Image Gallery

20 photo(s) available in the Image Gallery

Plant Characteristics

Duration: Annual
Habit: Herb
Size Notes: Up to about 3 feet tall.
Fruit: Fruit is a cypsela (pl. cypselae). Though technically incorrect, the fruit is often referred to as an achene.

Bloom Information

Bloom Color: White , Yellow , Green
Bloom Time: Apr , May , Jun , Jul , Aug , Sep , Oct , Nov
Bloom Notes: Flowers are inconspicuous and without ray florets.

Distribution

USA: AZ , CA , CO , ID , KS , MN , MO , MT , ND , NE , NM , NV , OK , OR , SD , TX , UT , WA , WY
Canada: AB , MB , SK

Web Reference

Webref 3 - Flora of North America (2014) Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.

Additional resources

USDA: Find Ambrosia acanthicarpa in USDA Plants
FNA: Find Ambrosia acanthicarpa in the Flora of North America (if available)
Google: Search Google for Ambrosia acanthicarpa

Metadata

Record Modified: 0000-00-00
Research By: CBR

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