Herbaceous perennials shellflower

Wikipedia Word definitions in Wikipedia
Chelone is a genus of four species of perennial herbaceous plants native to eastern North America. They all have similarly shaped flowers (which led to the name turtlehead due to their resemblance to the head of a turtle), which vary in color from white ...

Wiktionary Word definitions in Wiktionary
n. (context botany English) (taxlink Chelone genus), a genus of four species of perennial herbaceous plants that are native to eastern North America.

The Collaborative International Dictionary Word definitions in The Collaborative International Dictionary
Chelone \Che*lo"ne\, n. [Gr. chelw`nh a tortoise. So named from shape of the upper lip of the corolla.] (Bot.) A genus of hardy perennial flowering plants, of the order Scrophulariace[ae] , natives of North America; -- called also snakehead , turtlehead ...