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Achillea millefolium L. var. occidentalis DC.
western yarrow
Symbol: ACMIO
Group: Dicot
Family: Asteraceae
Growth Habit: Forb/herb
Duration: Perennial
U.S. Nativity: Native
Click on the image below to download a high-resolution JPEG file.
Click on this Photograph of Achillea millefolium var. occidentalis (western yarrow) to download a high-resolution JPEG file Achillea lanulosa

Brother Alfred Brousseau. Courtesy of St. Mary's College of California. ©St. Mary's College of California. Usage Guidelines.

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Classification Distribution Images Invasive Links More Info Noxious Related Taxa Synonyms Wetland
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Plant Synonyms:
ACMIO Achillea millefolium L. var. occidentalis DC.
 

ACAN7

Achillea angustissima Rydb.
 

ACAS2

Achillea aspleniifolia auct. non Vent.
 

ACER2

Achillea eradiata Piper
 

ACGR5

Achillea gracilis Raf.
 

ACLA3

Achillea laxiflora Pollard & Cockerell
 

ACLA5

Achillea lanulosa Nutt.
 

ACLAA3

Achillea lanulosa Nutt. var. arachnoidea Lunell
 

ACLAE

Achillea lanulosa Nutt. var. eradiata (Piper) M.E. Peck
 

ACLAT

Achillea lanulosa Nutt. ssp. typica Keck
 

ACMIA4

Achillea millefolium L. var. aspleniifolia (Vent.) Farw.
 

ACMIG2

Achillea millefolium L. var. gracilis Raf. ex DC.
 

ACMIL

Achillea millefolium L. ssp. lanulosa (Nutt.) Piper
 

ACMIL3

Achillea millefolium L. var. lanulosa (Nutt.) Piper
 

ACMIO2

Achillea millefolium L. ssp. occidentalis (DC.) Hyl.
 

ACMIP5

Achillea millefolium L. ssp. pallidotegula Boivin
 

ACMIR

Achillea millefolium L. var. rosea (Desf.) Torr. & Gray
 

ACMIR2

Achillea millefolium L. var. russeolata Boivin
 

ACOC

Achillea occidentalis (DC.) Raf. ex Rydb.
 

ACRO4

Achillea rosea Desf.
 

ACTO3

Achillea tomentosa Pursh, non L.
More Information
About western yarrow

Link to plant characteristics report for Achillea millefolium var. occidentalis

Link to plant Classification report for Achillea millefolium var. occidentalis

Plant source and reference for Achillea millefolium var. occidentalis

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

Achillea millefolium L. var. occidentalis DC.

ACMIO

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

IL IA KS
MO ND SD
WI*
* Offsite source.
Alaska
Arizona
Arkansas
California
Colorado
Connecticut
Florida
Idaho
Illinois
Indiana
Iowa
Kansas
Maine
Maryland
Massachusetts
Michigan
Minnesota
Missouri
Montana
Nebraska
Nevada
New Hampshire
New Jersey
New Mexico
New York
North Carolina
North Dakota
Ohio
Oklahoma
Oregon
Pennsylvania
Rhode Island
South Dakota
Tennessee
Texas
Utah
Vermont
Washington
West Virginia
Wisconsin
Wyoming

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Kansas distribution information Missouri distribution information South Dakota distribution information Iowa distribution information Illinois distribution information Wisconsin distribution information linked offsite at University of Wisconsin Madison North Dakota distribution information
Related Taxa:
Achillea millefolium L. var. occidentalis DC.

View 440 genera in Asteraceae, 9 species in Achillea, 11 varieties in Achillea millefolium

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Classification:
Achillea millefolium L. var. occidentalis DC.

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 Achillea L. – yarrow
                               Species Achillea millefolium L. – common yarrow
                                  Variety Achillea millefolium L. var. occidentalis DC. – western yarrow

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Invasive Information:
Achillea millefolium L. var. occidentalis DC.
    Achillea lanulosa Nutt.
        western yarrow
    Achillea millefolium L.
        common yarrow
        bloodwort
        carpenter's weed
        hierba de las cortaduras
        plumajillo
        milfoil
The related entities and synonyms italicized and indented above are 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.
KY   Haragan, P.D.. 1991. Weeds of Kentucky and Adjacent States: A Field Guide. The University Press of Kentucky. Lexington, Kentucky.. 278pp.
 
N'EAST   Uva, R.H., J.C. Neal, & J.M. DiTomaso. 1997. Weeds of the Northeast. Cornell University Press. Ithaca, New York.. 397pp.
 
NE&GP;   Stubbendieck, J., G.Y. Friisoe, & M.R. Bolick. 1994. Weeds of Nebraska and the Great Plains. Nebraska Department of Agriculture, Bureau of Plant Industry. Lincoln, Nebraska.. 589pp.
 
SWSS   Southern Weed Science Society. 1998. Weeds of the United States and Canada. CD-ROM. Southern Weed Science Society. Champaign, Illinois..
 
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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Wetland Indicator Status:*
Achillea millefolium L. var. occidentalis DC.
ACMI2: Achillea millefolium L.
Nat. Ind. Reg. 1 Reg. 2 Reg. 3 Reg. 4 Reg. 5 Reg. 6 Reg. 7 Reg. 8 Reg. 9 Reg. 0 Reg. A Reg. C Reg. H
UPL,FACU FACU FACU FACU FACU FACU FACU FACU FACU FACU FACU FACU NO UPL

      *for this plant and/or its related entities

Wetland Data InformationInterpreting wetland indicator status

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Other Species Accounts and Images:
Achillea millefolium L. var. occidentalis DC.

View taxonomic account from Integrated Taxonomic Information System (ITIS) for ITIS Taxonomic Serial Number 526856.
View species account from Wisconsin State Herbarium (UW-Madison).

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