PLATE 68 



RESERVE CELLULOSE 



1. Saw palmetto (Serenoa serrulata, [Michaux] Hook., f.). 



2. Areca nut (Areca catechu, L.). 



3. Colchicum seed (Colchicum autumnale, L.). 

 $-A. Porous side wall. 



3-5. Cell cavity above the side wall. 



