Cardaiiiiiio prateiisis, (L.) Cuckoo-flower. 



Specimens collected in the cold springy swamp near 

 Lake Traverse in the Minnesota region, one doubtfully 

 referred to this species. 



Physaria didyinoearpa, (Hook.) Gray. Double Bladder- 

 pod. 



On the dry plains east of the Black Hills. 



Lesquerella Spathulata, Rydberg. Low Bladder-pod. 



On dry knolls in the Black Hills and the surrounding 

 plains. 



Lesquerella argentia areiiosa, (Richards.) Wats. Sil- 

 very Bladder-pod. 

 Vesicaria arenosa, Richards. 



In the Black Hills and the adjacent plains. 



Bursa Bursa-pastoris, (L.) Britton. Shepard's Purse. 

 Caps el la Biirsa-pastoris, Medic. 



Sparingly introduced from the Missouri eastward and 

 in the Black Hills. 



Cainelina sativa, (L.) False Flax. 



Occasional in flax fields and waste places in the Sioux 

 valley and the Black Hills. 



Draba Caroliniaiia, Walt. Carolina Whitlow-grass. 



On dry, sandy knolls from the James valley westward. 



Draba Caroliniaiia luieraiitha, (Mott.) Gray. 

 In the Black Hills. 



Draba iieiiiorasa, L. Wood Whitlow-grass. 



Occasional on sandy knolls in the Sioux valley and in 

 the Black Hills. 



Draba aurea, Vahl. Golden Whitlow-grass. 



In the Black Hills. 

 Sophia iiicisa, (Engelm.) Greene. Western Tansy Mus- 

 tard. 



Sisy7nbrium incisum^ Engelm. 

 Occasional throughout the state. 



