Smooth brome grass (Bromus inermis)
Appearance: Perennial cool season grass, 2 - 3' high, hairless erect stem.
Leaf blade: Conspicuous "M"- or "W"-shaped constriction, blade is about 1/4" wide.
Flower: Open panicle (main axis with subdivided branching), erect with ascending branches, blooming in June and July.
Roots: Reproduces vegetatively through horizontal stems growing below the soil surface, called rhizomes, forming roots and producing new plants.