Shaded perennial-crop systems involving commercial crops such as coffee (Coffea sp.), tea (Camellia sinensis), cacao (Theobroma cacao), and black pepper (Piper nigrum) are very common agroforestry systems in lowland humid tropics. The picture shows such a system including peach palm (Bactris gasipaes) in association with black pepper and cacao in Bahia, Brazil.