CHAPTER XX r 



OTHER FLOWERING PLANTS 



237. The Flowering Plants. — True flowering plants are 

 the most highly developed of all. They arc numerous, 

 it being estimated that 

 there are 120,000 kinds. 

 Some varieties are so 

 small as hardly to be 

 noticed, while others, 

 like the hardwood trees, 

 are very large. Some 

 live submerged in the 

 water, while others are 

 found only in deserts. 



The flowering plants 

 are of special interest 

 on account of their in- 

 timate relation to our 

 daily life, and on account 

 of this close relationship 

 we should study some 

 of the most common 



Figure 341. — Walnut Tree. 



families, such as the grass, rose, mustard, and the like, all 

 of which are easily recognized. 



The Grans Family. — The grass family has long narrow 

 leaves with clasping bases and parallel veins, fibrous 

 roots, and inconspicuous flowers which are pollinated by 

 the wind. The grasses arc the most important of all 



323 



