Richard Evans Schultes (1915-2001) was probably the greatest explorer of the Amazon, and regarded among anthropologists and seekers alike as the “father of ethnobotany.” Taking what was meant to be a short leave from Harvard in 1941, he surveyed the Amazon basin almost continuously for twelve years, during which time he lived among two dozen different Indian tribes, mapped rivers, secretly sought sources of rubber for the US government during WWII, and collected and classified 30,000 botanical specimens, including 2,000 new medicinal plants. Schultes chronicled his stay there in hundreds of remarkable photographs of the tribes and the land, evocative of the great documentary photographers such as Edward Sheriff Curtis. - See more at: http://www.govindagallery.com/richard-evans-schultes-3/#sthash.23urfCez.dpuf
The Tupari of Brazil, numbering 200, are No Longer Unreached. They are part of the Amazon people cluster within the Latin-Caribbean Americans affinity bloc. This people group is only found in Brazil. Their primary language is Tuparí. The primary religion practiced by the Tupari is ethnic religion. Ethnic religion is deeply rooted in a people's ethnic identity and conversion essentially equates to cultural assimilation.