Blossoming apple tree (IMAGE) PNAS Nexus Caption Blossoming apple tree, by Piet Mondriaan, 1912. Credit Kunstmuseum Den Haag Usage Restrictions No restrictions. License Public Domain 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.