FORAGE PLANTS OF THE FAMILY LEGUMINOS^ 207 



consumed as a human food. The scarlet runner bean (Phaseolus vwulti- 

 florus] is a strong-growing climbing plant used for decorative purposes 

 on account of its cluster of bright colored blossoms. The tepiary (Pha- 

 seolus acvtifoMus) is a newly recognized bean domesticated by the pre- 

 historic tribes of the southwestern United States and Mexico. Among 

 the food plants of secondary importance in different parts of Asia are 

 five annual species of beans that at various times have been introduced into 

 the United States, but concerning which very little definite information 



FIG. 89. Outline map of the United States, showing the regions to which toothed 

 bui clover (Medicago denticulata) and spotted bur clover (Medicago arabica) are adopted. 

 (Piper, C. V. and McKee, R.: Bur Clover. Farmers' Bulletin 693, 1915, p. 5.) 



has been published. These five are the adsuki bean (Phaseolus angularis), 

 the rice bean (Phaseolns calcaratus), the mung bean (Phaseolus aureus), 

 the urd (Phaseolus mungo) and the moth bean (Phaseolus aconitifolius) . 

 The sprouted mung beans are used as one of the chief constituents of 

 ordinary chop suey, served in Chinese restaurants in the United States. 

 There are two kinds of bur clover cultivated in the United States, (Fig 

 89), namely, the spotted, or southern bur clover (Medicago arabica} and 

 the toothed, or California bur clover (Medicago hispidula denticulata} (Fig. 

 90). These are used as cover crops, for soil renovation, for pasture and 

 hay. The horse, broad, or Windsor bean (Viciafaba) is one of the oldest 



