14 



PLATE IX. TYPES OF FRUIT. 



1. White Pine (cone), x 1. 



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



3. Willow (capsules), x J. 



4. Willow (a winged seed), enlarged. 



5. Trembling Aspen (capsules), x J. 



. Trembling Aspen (a winged seed), enlarged. 

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



x i. 



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

 S. American Hornbeam (a nut with 3 lobed 



bract), x }. 



10. American Hop Hornbeam (a nut inclosed in 



bladder-like bract), x 1. 



11. Black Birch (a membranous strobile), x i. 



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



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



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



15. Rd Oak (an immature acorn), x i. 



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



17. Red Mulberry (an aggregate fruit . i 



