<em>Nicotiana Quadravalvus </em> (IMAGE) Washington State University Caption Nicotiana quadravalvus is one of several species of tobacco that indigenous people used in religious and ceremonial practices. Washington State University researchers have found tobacco use among Nez Perce Indians goes way back, with nicotine in pipes 1,200 years old creating “the longest continuous biomolecular record of ancient tobacco smoking from a single region anywhere in the world.” Credit Emily Hull Usage Restrictions Open to all with credit License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.