Citrus Leaf Stages (IMAGE) Entomological Society of America Caption The first four leaves (left to right) show the progression of a flush from new tiny leaves to an almost fully expanded flush leaf. The leaf to the extreme right is a mature leaf. Credit David Hall, USDA-ARS 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.