PLATE 102 
PowbDERED Bucuu Stems (Barosma betulina (Berg.], Barth. and Wendl.). 
1. Hairs. 2. Epidermal cells, the larger pieces reddish-brown; the smaller 
aggregations white. 3. Transverse cortical parenchyma. 3’. Longitudinal 
cortical parenchyma with sphzro 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. 
