PLATE IX. TYPES OF FRUIT. 



1. White Pine (cone), x |. 



2. White Pine (winged seed), natural size. 



3. Willow (capsules), x i. 



4. Willow (a winged seed), enlarged. 



5. Trembling Aspen (capsules), x h. 



6. Trembling Aspen (a winged seed), enlarged. 



7. Black Walnut (a nut with indehiscent husk), 



x i. 



8. Hickory (a nut with dehiscent husk), x J. 



:9. American Hornbeam (a nut with 3-lobed 

 bract), X i. 



10. American Hop Hornbeam (a nut inclosed in 



bladder-like bract) , x 1. 



11. Black Birch (a membranous strobile), x h- 



12. Black Alder (a woody strobile), x i. 



13. Beech (a nut with prickly bur), x h. 



14. Chestnut (a nut with spiny bur), x 1. 



15. Red Oak (an immature acorn), x 1. 



16. Red Oak (a mature acorn), x i. 



17. Red Mulberry (an aggregate fruit), x i. 



