198 INTRODUCTION TO BOTANY 



or more different species of plants. We must, however, keep 

 in mind the fact that what we really want to find out is not 

 primarily the names of plants, but what plants are, how and 

 where the different groups live, how they reproduce them- 

 selves, and how their habits of living are related to the life 

 of other living things. We must have definite names for 

 plants and for their parts in order to be clear when we speak 

 of them, just as we need names for different people in order 

 that we may designate them in a definite way, although we 

 are more interested in what they are and what they do than 

 in their names. 



