RHIZOMES AND ROOTS. 



253 



PLATE CXI. 



FIG. 121. Powdered Pellitory Root (x 240). 



ca, Cambium. 



in, Inulin. 



I, I', Bast n longitudinal and transverse section, with and without inulin. 



pc, p'c Cells of outer and inner parts of the cortex, with and without 



inulin. 



pi, p'l', Parenchyma of the wood in longitudinal and transverse section. 

 rm, r'm'. Medullary rays in longitudinal and transverse section. 

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

 SC, Sclerenchymatous cells. 

 tr, v, vs, Vessels, etc. 



