PLATE LXXIX. TULIP TREE. 



1. A flowering branch with mature and developing leaves, x 4. 



2. Branch with a cone-like fruit, x 4. 



3. A single carpel, natural size. 



4 Portion of a carpel showing seeds, natural size. 



5. A seed, enlarged. 



6. Side view of a seed, enlarged. 



7. A winter twig, x 4. 



8. A terminal bud just opening, x 4. 



9. A twig showing developing leaves, x 4. 



