Glyceria is a widespread genus of grass family common across Eurasia, Australia, North Africa, and the Americas.

[2][3][4][5] Glyceria is known commonly as mannagrass in the United States, or, in the UK, sweet-grass.

These are perennial rhizomatous grasses found in wet areas in temperate regions worldwide.

Then it grows erect and bears leaf blades which may be flat or folded.

[6][7][8][9][10] Numerous species now considered better suited to other genera: Arctophila Catabrosa Colpodium Dryopoa Eragrostis Hydrocotyle Melica Phippsia Poa Puccinellia Scolochloa Torreyochloa Triplasis