Spartina alterniflora
 Spartina alterniflora (Smooth Cordgrass or Saltmarsh Cordgrass) is a perennial deciduous grass which is found in intertidal wetlands especially estuarine salt marshes. It grows 1-1.5 m tall (3-5 feet) and has smooth hollow stems which bear leaves up to 20-60 cm (8 inches-2 feet) long and 1.5 cm (1/2 inch) wide at their base which are sharply tapered and bend down at their tips. Like its relative Saltmeadow Cordgrass S. patens it produces flowers and seeds on only one side of the stalk.