THE STEM. 



73 



CKEEPING stems lie along or below the surface of 

 the ground, and send down roots from their nodes. 



TKAILING stems are weak, and lie loosely along 

 the ground. Fig. 140. 



ASCENDING stems stand slanting. Fig. 141. 



FIG. 142. 



Climbing. 



FIG. 113. 



Twining. 



CLIMBING stems are weak, and cling by tendrils to 

 the objects about them. 



TWINING stems are too weak to stand alone, 

 and support themselves by winding around other 

 stems. 



