资料来源 : Webster's Revised Unabridged Dictionary (1913)

Black-eyed Susan \Black"-eyed` Su"san\ (Bot.)
      (a) The coneflower, or yellow daisy ({Rudbeckia hirta}).
      (b) The bladder ketmie.

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.

资料来源 : WordNet®

Rudbeckia hirta
     n : the state flower of Maryland; of central and southeastern
         United States; having daisylike flowers with dark centers
         and yellow to orange rays [syn: {black-eyed Susan}, {Rudbeckia
         serotina}]