VEGETABLE POWDERS 



489 



Fig. 174. SCUTELLARIA. 



a. Lower epidermis. 

 6. Upper epidermis. 



c. Pollen grains. 



d. Trichomes. 



e. Glands, top view. 



/. Spongy tissue of leaves. 



g. Spiral ducts. 



h. Parenchyma. 



t. Small gland and epidermal cells, profile view. 



j. Parenchyma. 



