Powdered Buchu Stems {Barosjua betulina (Berg.], Barth. and Wendl.). 

 I. Hairs. 2. Epidermal cells, the larger pieces reddish-brown; the smaller 

 aggregations white. 3. Transverse cortical parenchyma. 3'. Longitudinal 

 cortical parenchyma with sphsero crystalline masses of hesperidin. 4. Bast 

 fibres. 5. Spiral, sclariform, and reticulate vessels. 6. Rosette crystals of 

 calcium oxalate. 7. Wood parenchyma. 8. Pith parenchyma with porous 

 side and end walls. 9. Wood fibres. 



