Mechanically inducing petal striations (VIDEO) University of Cambridge This video is under embargo. Please login to access this video. To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Caption Striations appear almost instantaneously when a mechanical stress was applied to proximal (purple) adaxial region of Hibiscus trionum petals. The movie is in real-time. Credit Movie capture by Sarah Robinson Usage Restrictions Please include credit and only republish movie when referencing this research paper. License Original 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.