RHIZOMES AND ROOTS. 



229 



PLATE XCIX. 



FIG. 109. Powdered Galangal Rhizome (x 240). 



a, Starch grains. 



ep, e'p', Epidermis in surface view and section, 



f , Sclerenchymatous fibres. 



go, Oleoresin cells. 



I, Bast. 



ml, Parenchyma of stele. 



pc, Parenchyma of cortex. 



pec, Outer layer of same, surface view 



tr, v, V, vr, Vessels, etc. 



vg, Sieve tubes. 



