"has given the world some of its most important plants: the Pará Rubber-tree ('), the Pineapple ('), Cacao ('), the Tapioca Plant or Cassava ('), Coca (' var. ipadu), the Brazil-nut Tree ('), paradise nuts (' spp.), the Curare liana ('), and yet others. Each of these species has local s and wild relatives that may be of inestimable value in future genetic projects that may be oriented towareds various aspects of improving cultivated forms for greater yield, disease resistance, adaptation to different soil and climatic conditions, and sundry other characteristics."