^''isoo!"'] PliOCEEDlNGS OF THE NATIONAL MUSEUM. 35 



Plate VII. 



(Oue-tbird uiitiiral size. ) 



Fig. 26. Leaf taken from a mere shrub. 



27. Leaf takeu from the same shrub. 



28. Leaf taken from the same shrub. 



29. Leaf taken from the same shrub. 



30. Leaf taken from the same shrub. 



31. Leaf the ohlest one, of a branch of the same shrub. 



The leaves Figs. 2G to 31 liave all been taken from the same shrub in the 

 wood on the shore of the Potomac. 



Plate VIII. 



(One-third natural size.) 



Fig. 32. Leaf of a tree in the Botanical Garden, labeled var. integrifolia. 



33. Leaf of the same tree. 



34. Leaf of the same tree. 



35. Leaf, the oldest one of a branch from the same tree. 



36. Leaf, the oldest one of a branch from the same tree. 



37. Leaf, the oldest one of a branch from the same tree. 



Plate IX. 



(Two-thirds natural size.) 



Fig. 3S. Leaf, taken from an old tree. In the axil of this leaf had been developed a 

 shoot, which carried the following leaves : 



39. The next youngest one. 



40. The third one after Fig. 41. 



41. The oldest one. 



