Elymus trachycaulus

Elymus trachycaulus is a species of wild rye known by the common name slender wheatgrass. It is native to much of North America, where it grows in widely varied habitats from northern Canada to Mexico.

It is variable in appearance, but generally bears a very narrow, linear inflorescence of spikelets appressed against the stem. There are three subspecies, two very widespread and one which is limited to Greenland.