Lichens and mosses (IMAGE) Max Planck Institute for Chemistry Caption Lichens, like this Phyllopsora gossypina, and mosses are found on all trees and leaves in the Amazon rainforest. Researchers have now found that they emit considerable amounts of reactive sesquiterpenoid compounds. Credit Achim Edtbauer Usage Restrictions Credit must be given to the creator. Only noncommercial uses of the work are permitted. No derivatives or adaptations of the work are permitted. License CC BY-NC-ND 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.