Elymus macgregorii (Native)

Well-drained floodplain forests, primarily along major rivers and their larger tributaries; occasionally in disturbed, mesic upland habitats such as moist forest edges or clearings. Locally common in the piedmont and mountains; a dominant grass in late spring and early summer along the Potomac, Shenandoah, James, Appomattox, Dan, and Roanoke rivers and probably elsewhere.