226 THE SOILS AND CROPS OF THE FAKM. 



Common Yellow Clover or Trefoil, {Medi- 

 cago lupulina) grows about 12 inches high and is in 

 bloom in May. The heads are a small cluster of 

 yellow blossoms. The leaves are small and the stalks 

 small, resembling white clover in its manner of 

 growth. 



It is too small for a hay crop. In Great Britain it 

 is considered desirable for pasture. It is bieDnial but 

 seeds so plentifully as to make it prac- 

 tically permanent. Common trefoil 

 occupies the northern part of Europe 

 while alfalfa occupies the southern part. 

 It grows readily in this country and 

 is worthy of a trial for early pastu- 

 rage. It would probably not produce 

 much summer pasturage, as it does not 

 stand heat and drought well. 



Bur Clover {Medicago denticu- 

 lata) is an annual, native of the Medi- 

 terranean region, which has become 

 widely distributed in California and 

 somewhat in the southern states and is 

 considered of great value. 



It only grows in a mild climate. It 

 is sown in the fall, growing during the 

 winter months and ripening in the spring. Another 

 crop may be grown on the the same land during the 

 summer, and the seed left in the soil will produce 

 a crop of clover during the succeeding winter months. 

 The seed is produced in pods or burs which cause 

 trouble by getting into the wool of sheep. 



Japan Clover (Lespedeza striata) is an annup,! 

 which was introduced into the south Atlantic states 



BUE ClXJVEE. 

 (After Vasey.) 



