add. ·noun any plant of the genus rudbeckia;
so called from the cone-shaped disk of the flower head. also, any plant of the related genera ratibida and brauneria, the latter usually known as purple coneflower.
add. ·noun any plant of the genus rudbeckia;
so called from the cone-shaped disk of the flower head. also, any plant of the related genera ratibida and brauneria, the latter usually known as purple coneflower.
Webster English vocab. Английский словарь Webster. 2012