rudbeckia noun. [rʌd'bɛkɪǝ, ru:d-] M18.
[mod. Latin (see below), from Olaf Rudbeck (1660-1740), Swedish botanist + -IA¹.]
Any of various tall plants constituting the genus Rudbeckia of the composite family, native to N. America and much grown for ornament, which bear yellow or orange flowers with a prominent conical dark-coloured disc, and include black-eyed Susan, R. hirta, and various coneflowers.

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