rudbeckia

2 definitions found

rudbeckia - Collaborative International Dictionary of English v.0.48 :

  Rudbeckia \Rud*beck"i*a\, n. [NL. So named after Olaf Rudebeck,
     a Swedish botanist.] (Bot.)
     A genus of composite plants, the coneflowers, consisting of
     perennial herbs with showy pedunculate heads, having a
     hemispherical involucre, sterile ray flowers, and a conical
     chaffy receptacle. There are about thirty species,
     exclusively North American. Rudbeckia hirta, the
     black-eyed Susan, is a common weed in meadows.
     [Webster 1913 Suppl.]

rudbeckia - WordNet (r) 2.1 (2005) :

  Rudbeckia
      n 1: North American perennial herbs with showy cone-shaped
           flower heads [syn: Rudbeckia, genus Rudbeckia]