148 



Capiioides aureiiiii, (Willd.) Kuntze. Golden Corydalis. 

 Corydalis aiirca, Willd. 



In light soil in the Minnesota and Sioux valleys, and 

 in the Black Hills. It was collected along a railroad 

 embankment, and was possibly introduced from farther 

 east. 



Capiioides ciirvisiliquin, (Englm.) Kuntze. Curved- 

 fruited Corydalis. 

 Corydalis curvisiliqua^ Englm. 

 Common in the Black Hills. 



CrucifER.^. — Mustard Family. 



Staiileya piiiiiata, (Pursh.) Britton. Stanleya. 

 On dry prairies in the Black Hills region. 



Lepidiuni virgiiiicuiii, L. Wild Pepper-grass. 



A weed in fields and roadsides in the Minnesota and 

 Sioux valleys. 



Lepidiuiu apetaluin, Willd. Apetalous Pepper-grass. 

 Lepidium intermedium^ Gray. 



A very abundant weed in cultivated fields and waste 

 places from the Missouri river eastward, 



Lepidium iiicisuin, Roth. Cut-leaved Pepper-grass. 

 Occurs rarely in the Black Hills. 



Tlialaspi arveiise, L. Field Pepper-grass. 



Sparingly introduced in the Sioux valley near Sioux 

 Falls. Doubtless introduced from Manitoba, where it is 

 a troublesome weed. 



Sisyinbriiim officinale, (L.) Scop. Hedge Mustard. 



A common weed in waste places from the Missouri 

 river eastward, 



Sisyinbriiim altissiniiiin, L. Tumbling Mustard. 



A common and troublesome weed in the Minnesota 

 valley, doubtless introduced from Assinoboia. 



Brassica nigra, (L.) Koch. Black Mustard. 



A common introduced weed in waste places. 



