coneflower
    n 1: any of various plants of the genus Rudbeckia cultivated for
         their large usually yellow daisies with prominent central
         cones
    2: a wildflower of the genus Ratibida
    3: any of various perennials of the eastern United States having
       thick rough leaves and long-stalked showy flowers with
       drooping rays and a conelike center

Coneflower \Cone"flow`er\, n.
   1. Any plant of the genus Rudbeckia; -- so called from the
      cone-shaped disk of the flower head. They are cultivated
      for their large usually yellow daisies with prominent
      central cones. Also, any plant of the related genera
      Ratibida and Brauneria, the latter usually known as
      purple coneflower.
      [Webster 1913 Suppl.]

   2. any of various perennials of eastern US having thick rough
      leaves and long-stalked showy flowers with drooping rays
      and a conelike center.
      [WordNet 1.5]