RHIZOMES AND BOOTS. 



239 



PLATE CIV. 



o 0^ o Q 

 "> s.V.- 



FIG. 114. -Powdered Ipecacuanha Root (x 240). 



a, a', a", Starch grains, simple and compound. 



ccr, Cells with calcium oxalate. 



fl, Fibrous cells. 



I, Bast. 



pc, p'c', Cortical parenchyma in longitudinal and transverse section. 



ph, p'h', Phelloderm in surface view and section. 



ra, Raphides. 



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



tra, Tracheids. 



