XVI LIST OF ILLUSTRATIONS 
FIG PAGE 
11. Branch of Western larch showing leaves and cone with 
protruding bracts........ 0... c eee 189 
12. Branch and cones of red spruce..............0 0c eee 191 
13. Twig and stalked cone of Eastern hemlock...... ...-. 193 
14. Twig and sessile cone of Western hemlock............ 193 
15. Twig and cone of white fir..................0. 00005 194. 
16. Twig and cone of Douglas fir or Oregon pine; showing 
protruding bracts........ 0... cece eee ee teens 195 
17. Branch, flower, and cone of the redwood............. 197 
18. Branch and cone of bald cypress................005- 199 . 
19. Branch and fruit of red cedar............... 0c 200 
20. Nut with and without husk, flowers, and compound 
leaf of black walnut............0 0.00. cece eee eee 203 
21. Compound leaf, bud, fruit, and flower of shagbark.... 205 
22. Leaf, flowers, and fruit of trembling aspen........... 207 
23. Leaf, flowers, and fruit of big tooth aspen............ 207 
24. Leaf, flower, and fruit of white willow............... 209 
25. Leaf, flower, and fruit of yellow birch ............... 211 
26. Leaf and flower of paper birch...................05. 211 
27. Leaf and burrs of American beech. ................ 213 
28. Leaf, flower, burr, and nut of chestnut............... 215 
29. Leaf and acorn of red oak... ...... 00... cece ee ees 217 
30. Leaf, flower, and fruit of white oak........... Lees 219 
31. Leaf and fruit of valley oak. .....0.0.00.0 0.0000. 000. 219 
32. Flower, fruit, and leaf of American elm.............. 221 
33. Leaf, flower, and fruit of sweet bay................. 223 
34. Leaf, bud, flower, and fruit of tulip poplar........... 225 
35. Leaf, bud, and fruit of sycamore.................... 227 
36. Compound leaf and fruit of black locust............. 229 
37. Leaf, flower, and fruit of mesquite.................. 229 
38. Leaf, flower, and fruit of sugar maple................ 233 
39. Leaf, flower, and fruit of red maple................. 234 
40. Leaf (compound), flower, and fruit of box elder....... 235 
Al. Leaf, flower, fruit, and bud of basswood............. 237 
42. Leaf, flower, and fruit of white ash.................- 239 
43. Terminal branch, showing leaves, flower, and fruit 
Of JUMIPET.. eee ence ee eeee 242 
