RHIZOMES AND ROOTS. 



271 



PLATE CXX. 



FIG. 130. Powdered Zedoary|Rhizome (x 240). 



a, Starch grains. 



e, Epidermis. 



end, Endodermis. 



ffv, Fragments of vascular bundles. 



go, Oleoresin cells. 



ip, Scar of hair. 



I, Bast. 



ml, Fragments of stelar parenchyma (after treatment with 



potash). 



or, Masses of oleoresin. 

 pc, Cortical parenchyma. 

 pt, Hairs, entire or broken. 

 s, s', Cork, in surface view and section. 

 v, vr, Vessels. 



