Elymus canadensis - AbsoluteAstronomy.com

Elymus canadensis is a species of wild rye

Elymus (genus)

Elymus is a genus of perennial grasses in the tribe which contains many of the main cereal grains. Plants of this genus are known generally as wildrye or wheatgrass...

known by the common name Canada wild rye. This grass is native to much of North America, being most abundant in the central plains and Great Plains

Great Plains

The Great Plains are a broad expanse of flat land, much of it covered in prairie, steppe and grassland, which lies west of the Mississippi River and east of the Rocky Mountains in the United States and Canada. This area covers parts of the U.S...

. It grows in a number of ecosystems, including riparian woodlands, many types of forest, lakeside sand dunes, and tallgrass prairie

Tallgrass prairie

The tallgrass prairie is an ecosystem native to central North America, with fire as its primary periodic disturbance. In the past, tallgrass prairies covered a large portion of the American Midwest, just east of the Great Plains, and portions of the Canadian Prairies. They flourished in areas with...

.
This is a perennial bunch grass reaching heights of one to one and a half meters.