Nassella and oats (IMAGE) Michigan State University Caption Native California bunchgrasses (Nassella pulchra) surrounded by exotic annual grasses at Jepson Prairie Reserve near Davis, Calif. Credit Carolyn Malmstrom, Michigan State University Usage Restrictions With credit to Michigan State University 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.