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Cross-SECTION OF Bucuu STEMs (Barosma betulina [Berg.], Barth. and Wendl.) 
1. Hairs. 2. Wavy epidermis. 3. Cortical parenchyma. 4. Secretion 
cells and cavity. 5. Group of bast fibres. 6. Sieve cells. 7. Medullary rays. 
8. Phloem parenchyma. 9. Vessels. 10. Wood fibres, and wood parenchyma. 
11. Pith parenchyma. 
