#ageratum  any plant of the genus Ageratum having opposite leaves and small heads of blue or white flowers
  supertype:  #flower  a plant cultivated for its blooms or blossoms
  member of:  #genus_Ageratum
  subtype:  #common_ageratum__Ageratum_houstonianum  small tender herb grown for its fluffy brushlike blue to lavender blooms

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