Muhlenbergia scoparia Vasey

Muhlenbergia scoparia Vasey, Contr. U. S. Nat. Herb. 1: 283 1893.
Muhlenbergia carinata Mez, Repert. Sp. Nov. 17: 213. 1921. (Type from Guadalajara Mexico, Pringle 2350)
Perennial; culms rather slender, erect, glabrous, about one m. tall, the basal overlapping sheaths compressed-keeled; sheaths glabrous, keeled; ligule thin, elongate, hidden in the folded base of the blade, 1-2 cm. long; blades elongate, slender, more or less flexuous, folded at base, flat or folded above, long-attenuate at tip, scabrous on the margins and more or less on the surfaces, 1-2 mm. wide ; panicle narrow, rather soft, somewhat loose, erect or somewhat nodding, purplish, 20-40 cm. long, the axis somewhat angled, nearly glabrous, the branches slender, loosely flowered, ascending or somewhat spreading, 3-10 cm. long, the puberulent pedicels about 1 mm. long; glumes subequal, thin, broad, ciliolate near summit, otherwise glabrous, about 1.5 mm. long, acute or extending into a ciliolate awn as much as 1 mm. long; lemma oblon g, narrowed above, glabrous on body, densely short-pilose at base, about 2 mm. long, awned, the awn slender, flexuous, scaberulous, 1-2 cm. long.
Type locauity: Guadalajara, Jalisco {Pringle 2350). Distribution: Rocky hills and canyons, Chihuahua to Jalisco.

Muhlenbergia scoparia là một loài thực vật có hoa trong họ Hòa thảo. Loài này được Vasey mô tả khoa học đầu tiên năm 1893.