Leaf of a Native Water Yellow Flag Iris (IMAGE) University of Bristol Caption This is a leaf of a native water yellow flag iris -- the green color comes from the chlorophyll molecules in the chloroplasts found within the plant cells. Credit Patricia Sanchez-Baracaldo 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.