Spartina alterniflora, a marsh cordgrass (IMAGE) Georgia Institute of Technology Caption Spartina alterniflora, the dominant plant in salt marshes on the Atlantic and Gulf coasts of the U.S, in the Dean Creek marsh. Credit Joel Kostka Lab Usage Restrictions N/A 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.