marsh grass

marsh grass (usually uncountable, plural marsh grasses)

1. Used other than figuratively or idiomatically: see marsh,‎ grass.
2. Any coarse grass growing in marshes of genus Spartina.

   Synonym: cord grass, swamp grass, meadow grass, swamp hay, thatch grass

3. Any wetland grass of genus Hymenachne.
4. Echinochloa colonum

   Synonym: barnyard millet, jungle ricegrass, jungle rice, shama millet, Deccan grass, small barnyard grass, awnless barnyard grass

• (Spartina): Spartina cynosuroides, Spartina patens (syn. Spartina juncea), salt hay