Pterocarpus, a Rain Forest Tree

 Trees are the foundation of the rain forest. Without trees, there would be no forest in rain forest, just rain. And all that rain is very hard on the ground when there are no trees, and causes a lot of erosion.

This tree is Pterocarpus, a special tree because of its strange roots above the ground. These "buttressed" roots spread out in all directions from the trees. Pterocarpus uses these spreading roots to capture nutrition from the ground a long way from the trunk.

Tropical rain forest trees often have spreading roots. This is different from trees in the United States, in what is called a temperate forest. In a temperate forest, trees need to send a root deep to get water and have one big root going down with small roots going to the sides. In the rain forest, there is a lot of water so they don't need the big root going down. But there is little nutrition in the soil, so the tree must spread its roots out in search of nutrition.