THE STEM. 



75 



and tough. It is then called a WOODY stem. But, 

 if it is soft and brittle, it is *m HERBACEOUS stem. 

 The stem schedule consists now of the following 

 questions : 



SCHEDULE EIGHTEEN. 



NOTE. In schedule eighteen, as in schedule nine, no picture is 

 described, because two of the questions now added, viz., Color? 

 and Structure ? relate to features that cannot be easily repre- 

 sented in a picture, while size and surface, as seen in nature, 

 are so unlike pictorial presentations, that an example given 

 here would be but a poor guide in schedule practise. The 

 descriptive terras used in answering these questions are so 

 familiar as not to need illustration. 



