Barnyard Grass (IMAGE) Washington University in St. Louis Caption The common form of barnyard grass (top) has red stems, while the mimic has green stems -- more like rice. Credit Jordan R. Brock/Washington University Usage Restrictions None 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.