CINNAMON 



253 



Inner Structure. See Figs. 114, 115. 



Powder of Saigon Cinnamon. Yellowish- or reddish-brown; 

 starch grains numerous, single or compound, the individual grains 





PA* 



FIG. 114. Transverse section of Cassia cinnamon bark: k, cork; x, thick-walled 

 cork cells; y, cork cells, the outer walls of which are thickened; phg, cork 

 cambium; scl, stone cells; x, parenchyma cell with large pores; B, bast 

 fibers; gR, short sclerenchyma; z, parenchyma separating the groups of 

 sclerenchymatous tissue; pPh, protophloem; obi, collapsed sieve; Sch, 

 mucilage canals; php, bast parenchyma; o, oil cells. After Tschirch and 

 Oesterle. 



being somewhat ellipsoidal or polygonal and from 0.003 to 0.020 

 mm. in diameter; stone cells rather prominent, the walls being 



