any North American plant of the genera Rudbeckia, Ratibida, and Echinacea, which have rayed flowers with a conelike centre: family Asteraceae (composites)
See also black-eyed Susan
coneflower in American English
(ˈkoʊnˌflaʊər)
US
noun
any of several genera (esp. Rudbeckia, Ratibida, and Echinacea) of showy plants of the composite family, having cone-shaped receptacles, as the black-eyed Susan