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. procumbent, 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 sandy 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. tenuiflora, 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. 



