PLATE 49 
A. Cross-section of black Indian hemp (A pocynum cannabinum, L.). 
1. Longitudinal section of a latex tube. 
2. Cross-section of latex tube. 
3. Parenchyma. 
B. Cross-section of a part of black Indian hemp root. 
4. Cross-section of a large latex tube. 
5. Parenchyma. 
