If one continues his journey toward the equator he will next pass through forests of broad-leaved trees.

They will include oak, maple, beech, chestnut, hickory, and sycamore.
In Kentucky, which is a centre of the broad-leaved belt, there are several hundred different varieties of trees.

Farther south, the cone-bearing species prevail.

They are followed in the march toward the Gulf of Mexico by the tropical trees of southern Florida.

If one journeys west from the Mississippi River across the Great Plains he finally will come to the Rocky Mountains, where evergreen trees predominate.