182 STATE HORTICULTURAL SOCIETY 



2344. M . lupulina, L. Blackseed Hop Clover. 

 Introduced from Europe; not infrequent. 



Melilotus, Juss. 



2345. M. alba, Desv. White Sweet-clover. 

 A common introduced weed. 



2346. M. officinalis, (L.) Lam. Yellow Sweet-clover. 

 Introduced. Less common than the preceding. 



Trifolium, L. 



2347. T. aureum, Poll. Yellow Clover. 

 Introduced from Europe. 



2348. T. procumbens, L. Small Hop Clover. 

 Introduced; not common. 



2349. T. arvense, L. Stone Clover. 

 Introduced. 



2350. T. pratense, L. Red Clover. 

 Everywhere escaped from cultivation. 



2351. T. reflexum, L. Buffalo Clover. 

 In sand}' soil. 



2352. T. hybridum, L. Alsike Clover. 

 Becoming quite common in waste places. 



2353. T. repens, L. White Clover. 

 Common everywhere. 



2354. T. stoloniferum, Muhl. Running Buffalo Clover. 

 Western part of state; not common. 



Lotus, L. 



2355. L. americanus, (Nutt.) Bish. Prairie Bird's-foot 



Trefoil. 

 In dry soil; not common. 



PSORALEA, L. 



2356. P. tenuifiora, Pursh. Few-flowered Psoralea. 

 On prairie. 



2357. P. argophylia, Pursh. Silver-leaf Psoralea. 

 Common; on prairie. 



2358. P. esculenta, Pursh. Prairie Turnip. 

 Frequent on high prairies. 



