310 PLANTS AND MAN 



climates decidedly curtails possible economic importance. Their 

 ornamental value probably surpasses their timber value, since 

 both are widely planted for foliage and flowers in the United 

 States and in Europe. 



In this and the preceding chapter, consideration has centered 

 upon the variety, characteristics, and distribution of the impor- 

 tant trees of the United States. The following chapter is devoted 

 to the more important wood products derived from these trees. 

 For other forest tree products, the reader is referred to Chapters 

 21, 22, and 23, dealing respectively with latex-producing plants, 

 drug yielding plants, and industrial uses of plants. 



I 



