Oldenlandia affinis (IMAGE) University of Bath Caption Researchers used an enzyme from the flower Oldenlandia affinis, which uses cyclic peptides as a defence against predators. Credit Peter Warren Usage Restrictions No restrictions. License CC0 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.