(74) 
4. Negundo aceroides, Moench. Box elder. 
5. Staphylea trifolia, L. Bladder nut. 
6. Euonymus atropurpureus, Jacq. Burning bush. 
7. Sambucus canadensis, L. Elder. 
8. Fraxinus americana, L. White ash. 
9 Fraxinus pubescens, Lam. Bed ash. 
10. Fraxinus viridis, Michx., f. Green ash. 
11. Fraxinus sambucifolia, Lam. Black ash. 
12. Fraxinus quadrangulata, Michx. Blue ash. 
13. Viburnum lentago, L. Sheep berry. 
14. Viburnum dentatum, L. Arrow wood. 
15. Cornus paniculata, L’Her. Panicled cornel. 
16. Lonicera flava, Sims. Yellow honeysuckle. 
17. Tecoma radicans, Juss Trumpet-creeper. 
18. Catalpa bignonioides, Walt. Indian bean. 
19. Cephalanthus occidentalis, L. Button bush. 
20. Bhamnus laceolatus, Pursh Buck-thorn. 
21. Horizontal cut of the bud of Fraxinus sambucifolia. 
22. Horizontal cut of the bud of Acer dasycarpum. 
23. Horizontal cut of the bud of Staphylea trifolia. 
24. Horizontal cut of the bud of Cornus paniculata. 
25. Horizontal cut of the bud of Euonymus atropurpureus. 
PLATE II. 
1. Quercus alba, L. White oak. 
2. Quercus macrocarpa, Michx. Burr oak. 
3. Quercus bicolor, Willd. Swamp white oak. 
4. Quercus prinus, L. (Var. acuminata, Michx.) Chestnut oak. 
5. Quercus imbricaria, Michx. Shingle oak. 
6. Quercus coccinea, Wang. Scarlet oak. 
7. Quercus rubra, L. Bed oak. 
8. Quercus nigra, L. Black-jack oak. 
9. Populus monilifera, Ait. Cottonwood. 
10. Populus heterophylla, L. Downy poplar. 
11. Populus grandidentata, Michx. Large-toothed aspen. 
12. Populus tremuloides, Michx. Aspen. 
13. Corylus americana, Walt. Hazlenut. 
14. Fagus ferruginea, Ait. Beech. 
15. Ostrya virginica, Willd. Hop hornbeam. 
16. Carpinus americana, Michx. Hornbeam. 
17. Juglans cinerea, L. butternut. 
18. Juglans nigra, L. Black walnut. 
19. Carya alba, Nutt. Hickory. 
20. Carya tomentosa, Nutt. Mockernut. 
21. Carya olivaeformis, Nutt. Pecan. 
22. Carya amara, Nutt Bitternut. 
23. Liquidambar styraciflua, L. Sweet gum 
