Just learned about it today. Ipe wood. Denser than mahogany or teak. Good for outdoor decking and furniture. It is not cheap - but neither is teak. Manufactured wood is cheaper, but not as pleasing.
I was told that you need plenty of spare drill bits to work with it, because it burns them out. Nails do not work with it at all. Nice to know that the rain forest is good for something besides parrots, tree sloths, monkeys, anacondas, and the nekked jungle indians with their blow-guns that the anthropologists need to study for their PhD theses.
One of the main reasons we care about the South American jungles is because that is where most of our songbirds live during our winter. Even just as south as Mexico, it is odd to see our summer bird friends clambering around palms in the winter.