208 



Heliopsis scabra, Dunal. Rough Ox Eye. 



Common in thickets and open woods from the Missouri 

 valley eastward. Occasional westward along the White 

 and Bad rivers. 



Rudbeckia hirta, L. Black-eyed Susan. 



On prairies in the Minnesota and Sioux valleys and 

 in the Black Hills. 



Kudbeckia laciiiiata, L. Green-headed Coneflower. 



In thickets in the Minnesota, Sioux, and southern 

 Missouri valleys as far north as Charles Mix county. 



Ratibida pinnata, (Vent.) Barnhart. Gray-headed Cone- 

 flower. 

 Lepachys pinnata, T. & G. 



On low prairies in the Sioux valley. 



Ratibida columnaris, (Sims.) D. Don. Prairie Coneflower. 

 Lepachys columnaris, T. & G. 



On prairies from the Missouri valley eastward and in 

 the Black Hills. 



Brauneria pallida, (Nutt.) Britton. Pale Purple Cone- 

 flower. 



Echinacea angustifolia, DC. 



Common on prairies from the Missouri valley east- 

 ward and in the Black Hills. 



Helianthus animus, L. Common Sunflower. 

 Common throughout the state. 



Helianthus petiolaris, Nutt. Prairie Sunflower. 



O^ dry prairies throughout the state; rare from the 

 James valley eastward. 



Helianthus scaberrimus, Ell. Stiff Sunflower. 

 Helianthus rigidus, Desf, 



Abundant on dry prairies throughout the state. 

 Helianthus Maximiliani, Schrad. Maximilian's Sun- 

 flower. 



On rather low prairies throughout the state. 



