PLATE IV 



I9> Striped Maple, loi. (Vb) 

 2D. Mountain Maple. 102. (V4) 



21. Cut-leaved Maple. 103. i}u) 



22. Ash- leaved Maple. 122. (%) 



23. Chestnut. 41. (i/s) 



24. American Linden. 2o> 



25. Paper Birch. 20. (i/«) 



26. White Birch. 65. (VV) 



27. Red Birch. 33. (1/.) 



28. Sweet Birch. 31. (1/,) 



QU) 



199 



