Collecting Privet Leaves (IMAGE) Monell Chemical Senses Center Caption Lead author Cathy Peyrot des Gachons, PhD, gathering privet leaves in Hartley Wood at the Pennsylvania State Arboretum, University Park, PA. Credit Monell Chemical Senses Center Usage Restrictions None 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.