PLATE XXII. 



Pnge. 



Figs. 1,2. Salix Integra, Gr. 1 1'^'' 



1 a. Fragment of leaf, magnified. 



Fig. 3. Salix media, Gr. 4 a, 4 6 - '^^^ 



Figs. 4,5. Salix anousta, Gr. 1, 4 a 1C8 



Figs. 6,7. Salix klongata, Gr. 4 6 1G9 



Fig. 8. PopuLDS i.atior var. cokdifolia, Gr. 3 l'^^ 



Fig. 9. Populus lj3vigata, Gr. 3 ^'^'> 



Figs. 10-13. Popolds Eichardsoni, Gr. 4 ft 177 



FiQ. 13. Populus Zaudachi, Gr. 4 o 1^8 



