201 



Eupatorium maculatum amoenum, (Pursh.) Britton. 

 In low ground in the Minnesota and Sioux valleys. 

 Quite distinct from the type. 



Eupatorium altissimuin, L. Tall Thoroughwort. 



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

 Minnesota valleys and the Black Hills. 



Eupatorium perfoliatum, 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 ageratoides, 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. 



Kulmia glutiiiosa, Ell. Prairie False Boneset. 

 Kuhnia eupatorioides corymbulosa, T. & G. 



On prairies throughout the state, but rare west of the 

 Missouri river. 



L-acinaria squarrosa, (I,.) Hill. Colicroot. 

 Liatris squarrosa, Willd. 



In the southern Missouri valley; Yankton, Running 

 Water and Charles Mix county. 



Laciiiaria punctata, (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. 



