Legume family tree (IMAGE) Penn State Caption Illustration of a tree representing the legume family tree with branches representing the six subfamilies. On each branch are flowers or pods of species belonging to the subfamilies. The lines extending from the nutrient bag on the upper left corner indicate the positions of some of the proposed whole-genome duplications. Credit Yiyong Zhao, Chien-Hsun Huang, and Hong Ma 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.