Category:Rudbeckia

Rud*beck"i*a, n. [nl. So named after olaf rudebeck, a swedish Botanist.] (bot.)

Defn: 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.