20 8 PASTORAL AND AGRICULTURAL BOTANY 



cultivated plants in Europe, and elsewhere, but of minor importance in the 

 United States, used as human food, and as a valuable stock feed (Figs. 91 

 and 92). The Japan clover (Lespedeza striata) was introduced from China, 



FIG. 90. Bur clover with prickly pods (Medicago denticulata) . (After Ball, Carle- 

 Ion, R.: Winter Forage Crops for the South. Farmers' Bulletin 147, 1902, p. 28; upper 

 figures of pods from Piper, C. V. and McKee, R.: Bur Clover. Farmers' Bulletin 693, 

 1915, p. 4.) 



or Japan into the South Atlantic states, where it is grown for hay and 

 pasture. Sainfoin (Onobrychis viciafolia) was introduced from Asia, but 

 is little grown here. The serradella (Ornithopus sativus} is successful on 



