148 TEXTBOOK OF BOTANY 



Table 3. Relative Composition of Leaves of Several Crop Plants the Stems, 

 Fruits, or Seeds of Which Are Sources of Commercial Sucrose, Starch, Pro- 

 tein, and Fat. The food that accumulates most abundantly in detached leaves 

 is the same as the one derived commercially from other organs of the plant. 



Glucose Sucro.se • Starch Protein Fat 



Sugar cane leaves 2.8 18. £ 14.4 13.0 6.5 



Rice leaves 2.4 6.9 £2.7 13.1 5.6 



Bean leaves 2.0 4.7 9.1 2J^.8 8.5 



Castor bean leaves 1.6 4.0 8.0 10.2 U.4 



