#centaury  any plant of the genus Centaurea
  supertype:  #subshrub__suffrutex  low-growing woody shrub or perennial with woody base
  member of:  #genus_Centaurea
  subtype:  #basket_flower__Centaurea_americana  annual of southwestern United States cultivated for its purple-rayed flower heads and its bracts that resemble small baskets
  subtype:  #Centaurea_cineraria__dusty_miller__dustymiller__centaureagymnocarpa  a plant having leaves and stems covered with down that resembles dust
  subtype:  #star-thistle__caltrop__Centauria_calcitrapa  Mediterranean annual or biennial herb having pinkish to purple flowers surrounded by spine-tipped scales; naturalized in America
  subtype:  #knapweed  any of various plants of the genus Centaurea having purple thistlelike flowers
     subtype:  #slender_knapweed__slenderknapweed  a variety of knapweed
     subtype:  #Jersey_knapweed  a variety of knapweed
     subtype:  #lesser_knapweed__black_knapweed__blackknapweed__hardheads__hardhead__Centaurea_nigra  a weedy perennial with tough wiry stems and purple flowers; native to Europe but widely naturalized
     subtype:  #great_knapweed__greatknapweed__greater_knapweed__greaterknapweed__Centaurea_scabiosa  tall European perennial having purple flower heads

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