Wild Moso Bamboo <em>Phyllostachys pubescens</em> (IMAGE) Hokkaido University Caption Fibers (vascular bundles) surrounding the heart-shaped black openings have a denser distribution toward the outer part. Credit Sato M., et al., <em>PLOS ONE</em>, May 3, 2017 Usage Restrictions This image is copyrighted and can be used for reporting this press release if properly credited. 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.