VEGETABLE POWDERS 



329 



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Fig. 90. DULCAMARA. 



a. Epidermis. 



b. 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. 



