BONESET OR WHITE SNAKEROOT 71 
until frost. The plant is a perennial, and if left undisturbed 
remains for many years in open woodlands that are not too 
closely pastured. 
Fic. 36.—Boneset or white snakeroot. 
The species most common in the upper Mississippi region 
is known as white snakeroot (HZ. urticefoliwm), which is sup- 
