About Bromus inermis Leyss.
Bromus inermis Leyss. is a species in the true grass family, Poaceae. This rhizomatous grass is native to Europe, and it is classified as invasive in North America. It is an erect, leafy, long-lived perennial that grows 46 to 91 cm (1 1/2 to 3 feet) tall. As a rhizomatous species, it commonly forms dense sod. It begins active growth in early spring, flowers from May to July, and reproduces via seeds, tillers, and rhizomes. If enough moisture is available, it can regrow and flower a second time in autumn. Its leaves are glabrous, or occasionally pubescent, with the most noticeable hair growth occurring on the leaf sheaths. Leaf blades measure 20 to 38 cm (8 to 15 inches) long and 0.6 to 1.3 cm (1/4 to 1/2 inch) wide, are flat, and have a raised, keeled midrib on their lower surface. The leaf sheaths are closed except near the leaf collar, and become papery in texture when dry. Leaf tissue is rolled in the bud. Ligules reach up to 0.3 cm (1/8 inch) long, and are rounded and membranous. Auricles are entirely absent.
