Muhlenbergia flavida Vasey

Muhlenbergia flavida Vasey, Contr. U. S. Nat. Herb. 1: 282 1893.
Annual; culms slender, often delicate, more or less branching, scaberulous, 15-30 cm. tall; sheaths mostly shorter than the internodes, faintly scaberulous toward the summit; ligule thin, about 2 mm. long; blades mostly less than 5 cm. long and less than 1 mm. wide, glabrous beneath, pubescent on the upper surface; panicle open, narrow, 5-15 cm. long, the axis and branches scabrous, the capillary branches ascending, 2-4 cm. long, naked below, mostly solitary; spikelets pale or yellow, short-pediceled, appressed along the main branches; glumes abotit equal, glabrous, narrow, acuminate or short-awned, 1.5-2 mm. long; lemma lanceolate, about 3 mm. long, prominently 3-nerved, pubescent on the midnerve below and on the margins nearly to summit, awned from between 2 minute lobes, the awn straight, 1-2 mm. long. Allied to M. Schmitzii but much more delicate.
Ty'pe locality: Rio Blanco. Jalisco (Palmer 645).
Distribution: Wet places. Jalisco (near Guadalajara, Palmer 645 in 1886. Pringle 1174'>) and Chihuahua (Sierra Madre, Pringle 3034).
Muhlenbergia flavida var. strictior Scribn.; (Beal, Grasses N. Am. 2: 263, as synonym. 1896) Hitchc. Contr. V. S. Nat. Herb. 17: 290. 1913 (based on M. strictior Beal). M. strictior Beal. Grasses N. Am. 2: 263. 1896. M. madrensis Jones, Contr. West. Bot. 14: 12. 1912 (type from Garcia, Sierra Madre, Chihuahua, Jones 7315). Differing only in the contracted panicle. TvPB LOCALITY': Sierra Madre, Chihuahua (Pringle I41S). Distribution: Chihuahua and Durango.

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