Sennae Folium ayG;udkif; (Pwei: gain:) 105

Fig. 3b Characters of the powdered drug a. Cork fragments filled with brown content b. Parenchyma with latex canal c. Parenchymatous cells containing solitary prism of calcium oxalate crystals andabundant starch grains d. Groups of sclereid with wide pitted lumen

Fig. 3a Transverse section of Alstonia scholaris (L.) R.Br. stem bark 1. Epidermis 2. Cork layer with brown content 3. Solitary calcium oxalate crystal 4. Stone cell 5. Cortical parenchyma cell 6. Starch grains 7. Intercellular space 8. Secondary phloem 9. Ray parenchyma 10. Latex canal 11. Cortex region 12. Secondary phloem region