210 



PASTORAL AND AGRICULTURAL BOTANY 



several others growing wild are used for hay, or pasturage, or in a few 

 cases the seeds are used as human foods. The cultivated kinds include' 



FIG. 92. Flower of Leguminosae. A, floral diagram of Vicia faba; B, sweet pea 

 flower, dissected, diagrammatic. (A.Robbins after Eichler, B after Bergen and Caldwell.) 



FIG. 93. Map of the southeastern United States, showing the distribution of 

 velvet beans. (After Tracy, S. M. and Coe, H. S.: Farmers' Bulletin, 962, 1918, p. 13.) 



the following: common vetch, or tares (Vicia saliva), hairy, sand, or Rus- 

 sian vetch (Vicia mllosa), (Fig. 94), bitter vetch (Vicia ervilia), scarlet 

 vetch (Vicia fulgens) , purple vetch (Vicia alropurpurea), Narbonne vetch 



