Acroptilon repens (L. ) Dc.
RUSSIAN KNAPWEED
Centaurea repens L; Hardheads; Centaurea repens
Life   Plantae   Dicotyledoneae   Asteraceae   Acroptilon

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Following modified from Plants Database, United States Department of Agriculture
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http://plants.usda.gov/java/profile?symbol=ACRE3 ---> https://plants.usda.gov/java/profile?symbol=ACRE3
https://plants.usda.gov/java/profile?symbol=ACRE3 ---> http://plants.usda.gov/core/profile?symbol=ACRE3
http://plants.usda.gov/core/profile?symbol=ACRE3 ---> https://plants.usda.gov/core/profile?symbol=ACRE3
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Acroptilon repens (L.) DC.
hardheads

Image of Acroptilon repens

General Information
Symbol: ACRE3
Group: Dicot
Family: Asteraceae
Duration: Perennial
Growth Habit : Forb/herb
Native Status : CAN   I
L48   I
Data Source and Documentation
About our new maps
Plants-NRCS Logos
green round image for nativity Native blue round image for introduced Introduced ocre round image for introduced and nativity Both white round image for no status Absent/Unreported
image for native, but no county data Native, No County Data image for introduced, but no county data Introduced, No County Data both introduced and native, but no county data Both, No County Data
Native Status:
lower 48 status L48    Alaska status AK    Hawaii status HI    Puerto Rico status PR    Virgin Islands status VI    Navassa Island NAV    Canada status CAN    Greenland status GL    Saint Pierre and Michelon status SPM    North America NA   

Images

click on a thumbnail to view an image, or see all the Acroptilon thumbnails at the Plants Gallery

Steve Hurst. Provided by ARS Systematic Botany and Mycology Laboratory . Islamic Republic of Iran. Usage Requirements .

slideshow

Synonyms

Symbol Scientific Name
CEPI3 Centaurea picris Pall. ex Willd.
CERE6 Centaurea repens L.

Classification

Click on a scientific name below to expand it in the PLANTS Classification Report.
Rank Scientific Name and Common Name
Kingdom Plantae – Plants
Subkingdom Tracheobionta – Vascular plants
Superdivision Spermatophyta – Seed plants
Division Magnoliophyta – Flowering plants
Class Magnoliopsida – Dicotyledons
Subclass Asteridae
Order Asterales
Family Asteraceae ⁄ Compositae – Aster family
Genus Acroptilon Cass. – hardheads
Species Acroptilon repens (L.) DC. – hardheads

Subordinate Taxa

This plant has no children

Legal Status

Noxious Weed Information
This plant is listed by the U.S. federal government or a state. Common names are from state and federal lists. Click on a place name to get a complete noxious weed list for that location, or click here for a composite list of all Federal and State Noxious Weeds .
Alaska Centaurea repens Russian knapweed Noxious weed
Arizona Russian knapweed Prohibited noxious weed Russian knapweed Restricted noxious weed
California Russian knapweed B list (noxious weeds)
Colorado Russian knapweed B list (noxious weeds)
Hawaii Russian knapweed Noxious weed
Idaho Centaurea repens Russian knapweed Noxious weed
Iowa Centaurea repens Russian knapweed Primary noxious weed
Kansas Centaurea repens Russian knapweed Noxious weed
Montana Centaurea repens Russian knapweed Category 1 noxious weed
Nevada Centaurea repens Russian knapweed Noxious weed
New Mexico Russian knapweed Class B noxious weed
North Dakota Russian knapweed Noxious weed
Oregon Russian knapweed "B" designated weed Russian knapweed Quarantine
South Carolina Centaurea repens Russian knapweed Plant pest
South Dakota Centaurea repens Russian knapweed Noxious weed Russian knapweed Regulated non-native plant species
Utah Centaurea repens Russian knapweed Noxious weed
Washington Russian knapweed Class B noxious weed
Wyoming Centaurea repens Russian knapweed Noxious weed
U.S. Weed Information
Acroptilon repens Russian knapweed Turestan thistle hardheads Centaurea repens Russian knapweed
hardheads
This plant and synonyms italicized and indented above can be weedy or invasive according to 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 weed list, or click here for a composite list of Weeds of the U.S.
STATE Assorted authors. State noxious weed lists for 46 states . State agriculture or natural resource departments.
NE&GP Stubbendieck, J., G.Y. Friisoe,and M.R. Bolick. 1994. Weeds of Nebraska and the Great Plains . Nebraska Department of Agriculture, Bureau of Plant Industry. Lincoln, Nebraska.
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.

Wetland Status

Interpreting Wetland Status

Related Links

More Accounts and Images
ARS Germplasm Resources Information Network (ACRE3)
CalPhotos (ACRE3)
Integrated Taxonomic Information System (ACRE3)
Integrated Taxonomic Information System (CEPI3)
Integrated Taxonomic Information System (CERE6)
Jepson Interchange (University of California - Berkeley) (ACRE3)
USDA Forest Service Fire Effects Information System (ACRE3)
University of Washington Burke Museum (ACRE3)
University of Wisconsin - Stevens Point Freckmann Herbarium (ACRE3)
Related Websites
AZ-Arizona Department of Transportation (ACRE3)
Arizona: abstract & image of Russian knapweed (Acroptilon repens) (ACRE3)
British Columbia Ag. & Food, Crop Protection Program (ACRE3)
CA-California Encycloweedia (ACRE3)
CA-UC IPM Online (ACRE3)
CO-CSU Extension Fact Sheet (CERE6)
CO-Douglas County Weed Education (CERE6)
Idaho One Plan: noxious abstract & images (ACRE3)
KS-Noxious Weeds in Kansas (CERE6)
MT-Center for Invasive Plant Management (ACRE3)
ND-Know Your Knapweeds (NDSU Extension) (CERE6)
NV-Extension Weed Wanted Posters (CERE6)
SD-Northern State University (ACRE3)
The Nature Conservancy: Wildland Weeds Management & Research Program (ACRE3)
USDA NRCS Plant Materials (ACRE3)
UT-Unwanted Weeds-Utah Department of Transportation (CERE6)
Victoria - Natural Resources & Environment: Landcare Notes (ACRE3)
WA-Washington Noxious Weed Control Board (ACRE3)

Wildlife

Food

Source Large Mammals Small Mammals Water Birds Terrestrial Birds

Cover

Source Large Mammals Small Mammals Water Birds Terrestrial Birds

Description of Values

Value Class Food Cover


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Following modified from CalPhotos
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CalPhotos     Photo Database

 

Number of matches : 32
Query: SELECT * FROM img WHERE ready=1 and taxon like "Acroptilon repens%" and (lifeform != "specimen_tag" OR lifeform != "Plant") ORDER BY taxon

Click on the thumbnail to see an enlargement

Acroptilon repens
Acroptilon repens
Russian Knapweed
ID: 0175 3301 2288 0052 [detail]
© 2001 CDFA

Acroptilon repens
Acroptilon repens
Russian Knapweed
ID: 0175 3301 2288 0051 [detail]
© 2001 CDFA

Acroptilon repens
Acroptilon repens
Russian Knapweed
ID: 0175 3301 2288 0049 [detail]
© 2001 CDFA

Acroptilon repens
Acroptilon repens
Russian Knapweed
ID: 0175 3301 3807 0016 [detail]
© 2001 CDFA

Acroptilon repens
Acroptilon repens
Puna Grass
ID: 0177 3303 3352 0085 [detail]
© 2001 CDFA

Acroptilon repens
Acroptilon repens
Russian Knapweed
ID: 0175 3301 3807 0015 [detail]
© 2001 CDFA

Acroptilon repens
Acroptilon repens
Puna Grass
ID: 0177 3303 3352 0084 [detail]
© 2001 CDFA

Acroptilon repens
Acroptilon repens
Russian Knapweed
ID: 0175 3301 2288 0050 [detail]
© 2001 CDFA

Acroptilon repens
Acroptilon repens
Russian Knapweed
ID: 0175 3301 2288 0053 [detail]
© 2001 CDFA

Acroptilon repens
Acroptilon repens
Russian Knapweed
ID: 0000 0000 0808 1891 [detail]
© 2008 John Dittes

Acroptilon repens
Acroptilon repens
Russian Knapweed
ID: 0000 0000 1008 0066 [detail]
© 2008 Neal Kramer

Acroptilon repens
Acroptilon repens
Russian Knapweed
ID: 0000 0000 1008 0067 [detail]
© 2008 Neal Kramer

Acroptilon repens
Acroptilon repens
Russian Knapweed
ID: 0000 0000 0809 2000 [detail]
© 2009 Ron Wolf

Acroptilon repens
Acroptilon repens
Russian Knapweed
ID: 0000 0000 0809 2001 [detail]
© 2009 Ron Wolf

Acroptilon repens
Acroptilon repens
Russian Knapweed
ID: 0000 0000 1113 1082 [detail]
© 2013 Neal Kramer

Acroptilon repens
Acroptilon repens
Russian Knapweed
ID: 0000 0000 1113 1083 [detail]
© 2013 Neal Kramer

Acroptilon repens
Acroptilon repens
Russian Knapweed
ID: 0000 0000 1113 1084 [detail]
© 2013 Neal Kramer

Acroptilon repens
Acroptilon repens
Russian Knapweed
ID: 0000 0000 1113 1085 [detail]
© 2013 Neal Kramer

Acroptilon repens
Acroptilon repens
Russian Thistle
ID: 0000 0000 1213 1005 [detail]
© 2013 Richard Spellenberg

Acroptilon repens
Acroptilon repens
Russian Thistle
ID: 0000 0000 1213 1006 [detail]
© 2013 Richard Spellenberg

Acroptilon repens
Acroptilon repens
Russian Thistle
ID: 0000 0000 1213 1007 [detail]
© 2013 Richard Spellenberg

Acroptilon repens
Acroptilon repens
ID: 0000 0000 0714 1357 [detail]
© 2014 Steve Matson

Acroptilon repens
Acroptilon repens
Russian Knapweed
ID: 0000 0000 0714 1358 [detail]
© 2014 Steve Matson

Acroptilon repens
Acroptilon repens
Russian Knapweed
ID: 0000 0000 0714 1359 [detail]
© 2014 Steve Matson

Using these photos: A variety of organizations and individuals have contributed photographs to CalPhotos. Please follow the usage guidelines provided with each image. Use and copyright information, as well as other details about the photo such as the date and the location, are available by clicking on the [detail] link under the thumbnail. See also: Using the Photos in CalPhotos .   


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