POPLAR. 



Lit;:', 



Plate 23. Popnlns balstnnifcra. Balm of Gilead. 



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

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

 one-half natural size. 4. Scale ot 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. 11. Winter branch showing buds, one-half 

 natural size. 



