Word Study
rudbeckia
CIDE DICTIONARY
rudbeckia, n. [NL. So named after Olaf Rudebeck , a Swedish botanist.].
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.]
OXFORD DICTIONARY
rudbeckia, n. a composite garden plant of the genus Rudbeckia, native to N. America.
Etymology
mod.L f. O. Rudbeck, Sw. botanist d. 1740
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