[Chap. XXVII GENERAL REGIONS AND PROCESSES IN STEMS 271 



Node 



Leaf sheath 



Vascular 

 bundle 



Vascular 

 bundle 



Fig. 98. Arrangement of tissues in a solid monocot stem {Panicum) . Courtesy of 



World Book Co. 



bamboo stem, and no big bamboo stem was ever a slender bamboo stem 

 (Fig. 99). The diameter of monocot stems usually does not increase 

 from year to year. There are, however, some exceptions. In the stems 

 of some monocots such as palms and yuccas a temporary cambium de- 



