Muhlenbergia grandis Vasey

Muhlenbergia grandis Vasey, Contr. U. S. Nat. Herb. 1: 283 1893.
Epicampes grandis Beal, Grasses N. Am. 2: 309. 1896. (Based on Muhlenbergia grandis Vasey.) Epicampes Bourgaei var. grandis Jones, Contr. West. Bot. 14: 7. 1912. (Based on Muhlenbergia grandis Vasey.)
Perennial; culms erect, robust, glabrous or slightly puberulent below, 1-2 meters tall, the lower tuft of overlapping sheaths compressed-keeled; sheaths keeled, glabrous or the lower puberulent; ligule very short, 1-2 mm. long; blades elongate, scabrous, the lower mostly flat, 3-10 mm. wide, the upper narrower, folded, or involute-attenuate toward the end; panicle erect, narrow, 30-60 cm. long, about 5 cm. wide, the axis angled, scabrous, the branches ascending or appressed, crowded, naked below, many-flowered, scabrous-pubescent, 5-8 cm. long, the pedicels shorter than the spikelets; glumes thin, nearly equal, rather broad, acute or subacute, scaberulous, about 1.5 mm. long; lemma narrowed above, scaberulous, shortpilose at base, about 2 mm. long, the awn flexuous, delicate, scabrous, 1-2 cm. long.
Type locality; Guadalajara, Jalisco {Palmer 515 in 1896). Distribution: Canyons, Jalisco.

Muhlenbergia grandis là một loài thực vật có hoa trong họ Hòa thảo. Loài này được Vasey mô tả khoa học đầu tiên năm 1892.