W. Murcott and Tango (IMAGE) University of California - Riverside Caption On the left is a W. Murcott mandarin and Tango is on the right. Credit T. Williams, UC Riverside. 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.