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Ambrosia acanthicarpa Hook.
flatspine burr ragweed
Symbol: AMAC2
Group: Dicot
Family: Asteraceae
Growth Habit: Forb/herb
Duration: Annual
U.S. Nativity: Native
Click on the image below to enlarge it and download a high-resolution TIFF file.
Click on this Line drawing of Ambrosia acanthicarpa (flatspine burr ragweed) to enlarge it and download a high-resolution TIFF file Gaertneria acanthicarpa

Britton, N.L., and A. Brown. 1913. Illustrated flora of the northern states and Canada. Vol. 3: 342. Courtesy of Kentucky Native Plant Society. Scanned by Omnitek Inc. Usage Guidelines.

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Classification Distribution Images Invasive Links More Info Noxious Related Taxa Synonyms Wetland
Plant Images:

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Plant Synonyms:
AMAC2 Ambrosia acanthicarpa Hook.
 

FRAC2

Franseria acanthicarpa (Hook.) Coville
 

GAAC2

Gaertneria acanthicarpa (Hook.) Britt.
More Information
About flatspine burr ragweed

Link to plant Classification report for Ambrosia acanthicarpa

Plant source and reference for Ambrosia acanthicarpa

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State Distributional Map for AMAC2
© Image generated using gd 1.8
Plant Distribution by State

Ambrosia acanthicarpa Hook.

AMAC2

See county distributions for the following states by clicking on them below or on the map.

CA KS MO
ND SD UT*
* Offsite source.
Arizona
California
Colorado
Idaho
Kansas
Minnesota
Missouri
Montana
Nebraska
Nevada
New Mexico
North Dakota
Oklahoma
Oregon
South Dakota
Texas
Utah
Washington
Wyoming

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Kansas distribution information California distribution information Missouri distribution information South Dakota distribution information Utah distribution information linked offsite at Utah State University North Dakota distribution information
Related Taxa:
Ambrosia acanthicarpa Hook.

View 440 genera in Asteraceae, 25 species in Ambrosia

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Classification:
Ambrosia acanthicarpa Hook.

Click on a scientific name below to expand it in the PLANTS Classification Report.
   
    Kingdom Plantae – Plants
       Subkingdom Tracheobionta – Vascular plants
          Superdivision Spermatophyta – Seed plants
             Division Magnoliophyta – Flowering plants
                Class Magnoliopsida – Dicotyledons
                   Subclass Asteridae –
                      Order Asterales –
                         Family Asteraceae – Aster family
                            Genus Ambrosia L. – ragweed
                               Species Ambrosia acanthicarpa Hook. – flatspine burr ragweed

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Invasive Information:
Ambrosia acanthicarpa Hook.
        annual bursage
        flatspine burr ragweed
This plant is considered invasive by the authoritative sources noted below. This plant may be known by one or more common names in different places, and some are listed above. Click on an acronym to view each invasive plant list, or click here for a composite list of Invasive Plants of the U.S.
WSWS   Whitson, T.D. (Ed.) et al.. 1996. Weeds of the West. Western Society of Weed Science in cooperation with Cooperative Extension Services, University of Wyoming. Laramie, Wyoming.. 630pp.
 

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Other Species Accounts and Images:
Ambrosia acanthicarpa Hook.
View photographs from CalPhotos.
View species account from ARS Germplasm Resources Information Network (GRIN).
View taxonomic account from Integrated Taxonomic Information System (ITIS) for ITIS Taxonomic Serial Number 36497.

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