According to Wikipedia, Rudbeckia is a plant genus of 23 species in the family Asteraceae.

The species are commonly called coneflowers and black-eyed-susans; all are native to North America and many species are cultivated in gardens for their showy yellow or gold flower heads.

This magnificent profusion of rudbeckia was captured at Cedar Point, an amusement park in Sandusky, Ohio, better known for its roller coasters than its flowers.

(Photo ©2012 by Susan McKee)