20I 



Eujjatoriuin iiiaculatuni ainoeimiii, (Pursh.) Brilton. 

 In low ground in the Minnesota and Sioux valleys. 

 Quite distinct from the type. 



Eupatoriuni altissiniiiiu, L. Tall Thoroughwort. 



In dry soils, near timber, in the James, Sioux and 

 Minnesota valleys and the Black Hills. 



Eupatorium perfoliatuui, L. Boneset. 



In swamps in the Minnesota valley, in the eastern part 

 of the Sioux valley and in the Missouri valley near Run- 

 ning Water. 



Eupatorium ajireratoides, L F. White Snakeroot. 



On wooded bluffs in the Minnesota, Sioux, and south- 

 ern James valleys, and extending up the Missouri valley 

 to Charles Mix county. 



Kuhnia glvitinosa, Ell. Prairie False Boneset. 

 Knhnia eiipatorioidcs corymbidosa^ T. & G. 



On prairies throughout the state, but rare west of the 

 Missouri river. 



Lacinaria squarrosa, (L.) Hill. Colicroot. 

 Liatris sqiiarrosa^ Willd. 



In the southern Missouri valley; Yankton, Running 

 Water and Charles Mix county. 



Lacinaria puuctata, (Hook.) Kuntze. Dotted Button 

 Snakeroot. 

 Liatris punctata^ Hook. 



On prairies and plains throughout the state, very com- 

 mon. A form with creamy white flowers is found. 



Lacinaria scariosa, (L.) Hill. Large Button Snakeroot. 

 Blazing Star. 

 Liatris scariosa^ Willd. 



From the Missouri valley eastward and in the Black 

 Hills; common. 



Lacinaria spicata, (L. ) Kuntze. Dense Button Snake- 

 root. Devil's Bit. 



