Agrostis
Red top
Red top crops are important because they are in many sources of crop production. Many red top farmers use red top because they respond well to fires, they aren't very flammable. Most farmers use red top just as pasture grass, or grass on the side of roads in ditches.
Agrostis is native to in North America and in some parts of North Africa. In the U.S red top is mostly produced in Kansas.