What is the exact scientific name for grass?

The exact name for grass.

What is the exact scientific name for grass?
Grass is a common word that generally describes a monocotyledonous green plant in the family Gramineae (Poaceae). True grasses include most plants grown as grains, for pasture, and for lawns (turf). They include some more specialised crops such as lemongrass, as well as many ornamental plants. They also include plants often not recognized to be grasses, such as bamboos or some species of weeds called crab grass.
Reply:The grass family is called Poaceae and contains thousands of species.
Reply:Which kind of grass??