This is a smooth-stemmed, annual coneflower, usually 2-3 ft. tall, with terminal, solitary flower heads. The leaves are oblong with heart-shaped, clasping bases. The yellow petals, with reddish-purple bases, are numerous and droop away from the dark, elongated, cone-shaped center.
This species’ clasping leaves differentiate it from Black-eyed Susan (Rudbeckia hirta) and Mexican Hat (Ratibida columnifera).