☆ any of a genus (Chelone) of perennial North American plants of the figwort family, with showy, tubular, white or pink flowers
See turtlehead in American Heritage Dictionary 4
(tûrˈtl-hĕdˌ)
noun
Any of several perennial North American herbs of the genus Chelone, especially C. glabra, having a white or pink bilabiate corolla with a bearded lower lip. Also called snakehead.