Muhlenbergia speciosa Vasey

Muhlenbergia speciosa Vasey, Bull. Torrey Club 13: 231 1886.
Bealia speciosa Beal, Grasses N. Am. 2: 268. 1896. (Based on Muhlenbergia speciosa Vasey.) Epicampes speciosa Jones, Contr. West. Bot. 14: 7. 1912. (Based on Muhlenbergia speciosa Vasey.)
Perennial; culms comparatively slender, erect, villous, especially below the nodes, mostly 1-1.5 meters tall, the basal overlapping sheaths compressed-keeled, the old sheaths becoming fibrous at base; sheaths villous, the hairs appressed or spreading; ligule very short, ciliate, about 1 mm. long; blades elongate, flat or usually folded, involute at the long slender point, villous; panicle soft and feathery, narrow, nodding at the summit, pale or brownish or purplish, rather densely flowered, 20-60 cm. long, the axis villous or nearly glabrous, the branches numerous, slender, appressed at the naked base, ascending or somewhat spreading above, many-flowered, 5-10 cm. long; glumes thin, about equal, obtuse, villous, 1.5-2 mm. long; lemma obtuse, villous, a little shorter than the glumes, awned, the awn delicate, flexuous, purplish, nearly smooth below, minutely scabrous above, 8-15 mm. long; palea broad, obtuse, villous, about as long as the lemma.
Type locality; Southwestern Chihuahua (Palmer 30 in 1885). Distribution: Dry hills and canyons, Nayarit to Chihuahua.

Muhlenbergia speciosa là một loài thực vật có hoa trong họ Hòa thảo. Loài này được Vasey mô tả khoa học đầu tiên năm 1886.