i6o 



Trifoliuiii pratense, L. Red Clover. 



Sparingly naturalized in the Minnesota and Sioux 

 valleys. 



Lotus Americanus, (Nutt.) Bisch. Prairie Bird's-foot 

 Trefoil. 

 Hosackia purshiana, Benth. 



On low, sandy land, mostly in the vicinity of streams, 

 locally very abundant; it is the most nutritious of all our 

 native forage crops. In cultivation, however, its growth 

 is uncertain. The name of " Dakota Vetch " has been 

 applied to it by J. G. Smith. 

 Psoralea tenuiflora, Pursh. Few-flowered Psoralea. 



Common in dry soils from the Missouri river valley 

 westward. 

 Psoralea digitata, Nutt. Digitate Psoralea. 



Occasional in dry soils from the Missouri river west- 

 ward. 

 Psoralea argophylla, Pursh. Silver-leaf Psoralea. 



Very abundant throughont the state. 

 Psoralea cuspidata, Pursh. Large-bracted Psoralea. 



Common on dry hills and banks from the Missouri 

 valley westward. 



Psoralea esculeiita, Pursh. Prairie Turnip, " Indian 

 Turnip." 



On sandy knolls throughout the state; common. 

 Psoralea lanceolata, Pursh, Lance-leaved Psoralea. 



In the southern part of the Sioux valley; uncommon. 

 Amorpha fruticosa, L. False Indigo. Lead Plant. 

 Bordering streams and lakes throughout the state. 

 Amorpha liana, Nutt. Fragrant False Indigo. 

 Amorpha microphylla, Pursh. 



On banks and prairies from the James valley west- 

 ward to the Black Hills; also reported from Sioux Falls 

 in the Sioux valley; more abundant from the Missouri 

 river westward. 



