PLANTS AND MAN 



clusters of yellow flowers are produced in the axils of the leaves. 

 Wild indigo or horsefly weed is a plant of similar sandy habi- 

 tats in our eastern and prairie states; the compound leaves consist 

 of only three leaflets, a contrast to the twelve to forty leaflets of a 

 partridge pea leaf. The yellow flowers are grouped in compact 

 terminal clusters. Rattlebox, so called because of the inflated 

 pod with loose seeds, is a common genus of the southeastern 

 states with yellow flowers of the usual pea type. Goats' rue, com- 

 mon to the eastern and southern states, has nine to twenty five 



C ' D 



Fig. 268. — The Pea Family includes lupine (A), wild indigo (B), clover (G) and 



goats rue (D). 



leaflets in each leaf, and clusters of red or yellow flowers. The 

 BUSH glovers, found in central and eastern United States, have 

 compound leaves divided into three leaflets, and pink, purple, 

 yellow or white flowers in axillary clusters. Our native species of 

 true clover is known as buffalo glover, found in the north- 

 eastern states and recognized by its globular flower clusters. 

 Prairie turnip and prairie glover are common in the central 

 and western parts of the United States; the former has clover-like 

 leaves, spikes of white or purple flowers, and a tuberous starchy 

 root; the latter has pinna tely compound leaves and spikes of 



