Tropical rain forests are found in the Amazon Basin which is the  location of the world's largest rain forest. Trees here are usually broad leaf but also evergreen. There is a canopy made of large trees that weave together and stand about 146 feet of 45 meters high. They are called emergents. Woody vines known as earth rooted lianas travel straight up to the canopy.
   The understudy is the shady part where palms, young trees, and non woody plants grow in dim light. The trees found here include cinchona, mahogany, rosewood, avocado, cocoa, rubber trees, and figs. The natives of the area obtained curare or wourali from the forest trees. Muscle relaxants can come from these poisons. The extracts from the cinchona tree are used to make quinine, an important fever medicine. Trees with cocoa pods provide chocolate from the cocoa fruit. The fig trees provide abundant and nourishing fruit that is desired by forest animals.
   Epiphytes, which are common, grow attached to larger plants, but do not receive nourishment from their  hosts. Examples of these are orchids, mosses, ferns, and bromeliads. Bromeliads are greyish-leaved plants and many are also known as air plants. They thrive in fresh air, without soil. Air plants can absorb water and nutrients from the rain running down trees. Common types of bromeliads are pineapple plants and Spanish moss. Orchids, which grow as climbers on trees, provide the flavoring vanilla. Philodendrons, diffenbachia, morning glories, cannas, nasturtiums, and rafflesia all grow here. Nasturtiums produce a range of colors. Orange, red, and yellow nasturtiums have been cultivated as popular garden plants. The rafflesia is the largest flower on earth weighing five pounds and being three feet wide.