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Elymus glaucus is a species of wild rye known by the common name blue wild rye. This grass is native to North America from Alaska to New York to northern Mexico. It is a common and widespread species of wild rye. This is a perennial bunch grass growing small, narrow tufts of several erect stems which exceed one half meter in height and may approach one and a half meters. It has a thick, fibrous root system, sometimes with rhizomes, the stems may form stolons. It has flat leaves each up to a centimeter wide at the base and rapidly narrowing to a point. The tip of the stem is occupied by a narrow, pointed inflorescence many centimeters long made up of a few spikelets. Each spikelet is one to one and a half centimeters long, not counting an awn which may be two or three centimeters in length.
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