centaurea cyanus

Noun
  1. An annual Eurasian plant cultivated in North America having showy heads of blue or purple or pink or white flowers (synset 111968271)
    is a type of: flower - a plant cultivated for its blooms or blossoms
    belongs to: centaurea, genus centaurea - knapweed; star thistle
    same as: bachelor's button, bluebottle, cornflower

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