Poplars in Washington State (IMAGE) American Society of Agronomy Caption Poplars growing along the Snoqualmie River in western Washington state. Endophytes were isolated from these trees. Credit Photo credit Sharon Doty Usage Restrictions None 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.