Collecting specimens (IMAGE) Emory University Caption Emory University graduate student Caitlin Risener, first author of the study, gathers tall goldenrod in South Georgia. Credit Photo by Tharanga Samarakoon Usage Restrictions Must include credit License Original 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.