A white oak (<i>Quercus alba</i>) (IMAGE) The Morton Arboretum Caption This is a white oak (Quercus alba) in the summer. Credit (c) The Morton Arboretum Usage Restrictions Please credit The Morton Arboretum, as such: (c) The Morton Arboretum. 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.