Elymus trachycaulos is a perennial grass species that belongs to the family of Poaceae. It is commonly known as roughstalk bluegrass. Although it has a unique scientific name, there are other synonymous names for this grass species such as Agropyron trachycaulum, Agropyron brevifolium, and Festuca trachycaulos. Other common names for the Elymus trachycaulos include Wallowa Mountains wheatgrass, rough-leaved wheatgrass, and Oregon wheatgrass. This grass species is commonly found in the western regions of North America, particularly the Pacific Northwest, and is commonly used for forage, erosion control, and restoration projects.