noun. Any of various plants of the genus Coreopsis in the composite family, chiefly of North America, having showy radiate flower heads with yellow or, rarely, purplish flowers.

noun. Any of several composite herbs, of genus Coreopsis, typically with bright yellow flowers.

"The snake-head, Chelone glabra, grew close to the shore, while a kind of coreopsis, turning its brazen face to the sun, full and rank, and a tall dull red flower, Eupatorium purpureum, or trumpet-weed, formed the rear rank of the fluvial array."