The Chloroplast (IMAGE) Kumamoto University Caption The textbook description of the chloroplast shows that it is surrounded by two envelopes. However, recent research by Kumamoto University's Professor Takano has shown that moss chloroplasts have an extra peptidoglycan 'wall.' Credit Professor Hiroyoshi Takano Usage Restrictions This image may only be used in conjunction with the accompanying release, or stories written about the work described in the release. 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.