66 PLANTS GROWN ON THE FARM 



is the berry of a pulpy fruit which grows on shrubs in 

 tropical regions. Many plants are raised for their fruit, 

 like berries, apples, peaches, figs, oranges, and dates. 



Fiber plants. - - The most important fiber plant in 

 the world is cotton ; and the United States is the great; 

 est cotton-growing country. Other fiber plants are 

 flax and the hemps. While the mulberry tree does not 

 yield fibers, yet its leaves are the food of the silk- 



Cabbage Lettuce Spinach 



LEAVES USED AS FOOD 



worms that spin the silk fibers which are woven into 

 silk cloth. 



Useful trees. - - Trees yield wood which is used for 

 fuel and lumber. Some also furnish nuts which are 

 used for food. From the pine trees we get turpentine 

 and tar ; and from the rubber tree is obtained a gummy 

 sap which is manufactured into rubber. Trees are 

 also grown to protect crops and buildings against 

 winds and to prevent erosion by running water. 

 Many kinds of trees are planted for their beauty. 



Drugs. Another group of plants furnishes drugs. 

 Most of these drugs are used as medicines. A few, 



