VEGETABLE POWDERS 



329 



Fig. 90. DULCAMARA. 



a. Epidermis. 



6. Epidermis, lateral view. 



c. Tracheids or wood fibers and porous ducts. 



d. Parenchyma, with crypto-crystals. 



e. Medullary ray. 



/. Parenchyma, longitudinal view, with crystals. 



g. Cork. 



h. Typical bast. 



i. Trichome. 



