PLATE LXXIX. TULIP TREE. 



1. A flowering branch with matnro and developing leaves, x 



2. Branch with a cone-likp fruit, x h- 



3. A single carpel, natural size. 



4 Portion of a carpel showing seeds, natui'al size. 



5. A seed, enlarged. 



6. Side view of a seed, enlarged. 



7. A winter twig, x i. 



8. A terminal bud just opening, x i. 



9. A twig showing developing leaves, x 4. 



