Cashew is a multipurpose tree of the Amazon that grows up to 15 m high. It has a thick and tortuous trunk with branches so winding that they frequently reach the ground. Cashew trees are often found growing wild on the drier sandy soils in the central plains of Brazil and are cultivated in many parts of the Amazon rainforest.
Stevia is a perennial shrub that grows up to 1 m tall and has leaves 2-3 cm long. It belongs to the Aster family, which is indigenous to the northern regions of South America. Stevia is still found growing wild in the highlands of the Amambay and Iguacu districts (a border area between Brazil and Paraguay). It is estimated that as many as 200 species of Stevia are native to South America; however, no other Stevia plants have exhibited the same intensity of sweetness as S. rebaudiana. It is grown commercially in many parts of Brazil, Paraguay, Uruguay, Central America, Israel, Thailand, and China.
Pau d’arco is a huge canopy tree native to the Amazon rainforest and other tropical parts of South and Latin America. It grows to 30 m high and the base of the tree can be 2–3 m in diameter. The Tabebuia genus includes about 100 species of large, flowering trees that are common to South American cities’ landscapes for their beauty. The tree also is popular with timber loggers—its high-quality wood is some of the heaviest, most durable wood in the tropics. Pau d’arco wood is widely used in the construction of everything from houses and boats to farm tools.