I lived in Amazonas, Brazil for ten years. Later I used to bring seeds back when I traveled to Brazil, with a seed import permit here (of my employwer then)--- I don't dare try now, since the laws passed in 2001. One can be charged with BioPiracy, have one's personal effects confiscated, be jailed, fined, and shamed in the national news media for being a damn foreigner unjustly exploring the national patrimony of genetic resources of Brasil. If you ask an indian or county person how they use a plant, you must pay the Brazilian federal government for the information before leaving the county, "to benefit all sectors of the population."
If you offically apply, fill out many forms, and swear up and down that the material will be for research purposes only, you may be granted permission to bring out some seeds or plants--- knowing that if, in the future you decide to sell some, you will have to negotiate for permission and payment of royalties to the federal government of Brazil.
I try to remind Brazilians that no one in Brazil pays royalties to the government of China for commercial production of citrus and soy, or Ethiopia for Coffee, Indonesia for Jak, Malaysia for Carambola and Jambo, India and SE Asia for Mangos, etc. But most like their double-standard and get all fired up about thieving foreigners. But when they come here they have a right to take seeds back.