any of various plants of the genus Rudbeckia cultivated for their large usually yellow daisies with prominent central cones
a wildflower of the genus Ratibida
any of various perennials of the eastern United States having thick rough leaves and long-stalked showy flowers with drooping rays and a conelike center
Any of several similar flowering plants of tribe Heliantheae in order Asterales, in genera Dracopis, Echinacea, Rudbeckia, and Ratibida, that have a cone-shaped disk of florets.