150 



Carclaiiiiiie prateiisis, (L ) Cuckoo-flower. 



Specimens collected in the cold spring swamp near 

 Lake Traverse in the Minnesota region, one doubtfully 

 referred to this species. 



Physaria diclymocarpa, (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. 

 Capsella Bursa-pastoris, Medic. 



Sparingly introduced from the Missouri eastward and 

 in the Black Hills. 



Camelina saliva, (L.) -False Flax. 



Occasional in flax fields and waste places in the Sioux 

 valley and the Black Hills. 



Draba Caroliiiiaiia, Walt. Carolina Whitlow-grass. 



On dry, sandy knolls from the James valley westward. 



Draba Caroliiiiana micrantha, (Mott.) Gray. 

 In the Black Hills. 



Draba nemorasa, 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 iiiHsa, (Engelm.) Greene. Western Tansy Mus- 

 tard. 



Sisymbrium incisum, Engelm. 

 Occasional throughout the state. 



