586 



SCIENTIFIC AND APPLIED PHARMACOGNOSY 



FIG. 247. Transverse section of a somewhat woody root of belladonna near the 

 cambium: C, parenchyma of the cortex, some of the cells showing sphenoidal 

 microcrystals of calcium oxalate (Co) ; S, leptome; C, cambium; M, medul- 

 lary rays; WF, wood fibers; 7 1 , tracheae; P, parenchmya of pith, some of the 

 cells having microcrystals of calcium oxalate. 



