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   Acroptilon repens (herb)     
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    Taxonomic name: Acroptilon repens (L.) DC.
    Synonyms: Centaurea picris Pallas ex Willd., Centaurea repens L.
    Common names: hardheads (English), Russian knapweed (English)
    Organism type: herb
    Acroptilon repens is native to Mongolia, western Turkestan, Iran, Turkish Armenia and Asia Minor and is now present on every continent. It is severely invasive in Europe, USA and Canada. It is commonly found in cultivated fields, orchards, grain and alfalfa fields, pastures, along roadsides, irrigation ditches and in waste sites.
    Occurs in:
    agricultural areas, range/grasslands, ruderal/disturbed
    Compiled by: IUCN/SSC Invasive Species Specialist Group (ISSG)
    Last Modified: Tuesday, 14 February 2006
ISSG Landcare Research NBII IUCN University of Auckland The Global Invasive Species Database is managed by the Invasive Species Specialist Group (ISSG) of the IUCN Species Survival Commission. It was developed as part of the global initiative on invasive species led by the Global Invasive Species Programme (GISP) and is supported through partnerships with the National Biological Information Infrastructure, Manaaki Whenua-Landcare Research and the University of Auckland. Conditions of use.