POPLAR. 



Plate 23. Populus balsamifera. Balm of Gilead. 



i- Flowering branch of staminate tree, one-half natural size. 2. F.ow 

 ering branch ot pistillate tree, one-half natural size. 3. Fruiting branch, 

 one-half natural size. 4. Scale oi staminate catkin, enlarged. 5. Scale ot 

 pistillate catkin, enlarged. 6. Scale without flower, displayed, enlarged. 7. 

 Mature fruit. 8. Seed, enlarged. 9. Longitudinal section of seed, en- 

 larged. 10. Embryo, enlarged, u. Winter branch showing buds, one-half 

 natural size. 



