326 



OTHER FLOWERING PLANTS 





Figure 344. — The Cereals. 

 a, wheat; b, oats; c, barley; d, rye. 



plants as food for man and the animals which he uses. 

 This family includes corn, wheat, oats, barley, rye, rice, 

 and similar grains. Wheat and barley are mentioned in 



the earliest literature and were among 

 the first plants cultivated for food. As 

 men learned to till the soil and harvest 

 these grains, agriculture became estab- 

 lished and a marked step towards civili- 

 zation was made. In China and India 

 millions to-day depend very largely upon 

 rice. In 1915 the United States pro- 

 duced 3,054,535,000 bushels of corn, 

 1,011,505,000 bushels of wheat, and 

 28,974,000 bushels of rice. 



Lily Family. — Lilies have parallel- 

 veined leaves. The flowers are made 



Figure 345 -Lily- u P °^ a six-parted perianth (calyx and 

 of-the-Valley. corolla taken together), six stamens, and 



