Muhlenbergia breviseta E. Fourn.

Muhlenbergia breviseta Griseb.; Fourn. Mex. PL Gram. 83
1886.
Perennial ; culms cespitose, slender, wiry, erect or somewhat decumbent at base, puberulent, several-noded, 10-20 cm. long; ligule 1-2 mm. long; blades scattered along the culm, flat or folded, glabrous, scabrous on the margins, mostly 1-2 cm. long, sometimes as much as 5 cm., less than 1 mm. wide; panicles rather delicate, narrow but somewhat open, mostly less than 5 cm. long, usually purple, the axis slender, angled, scaberulous, the branches rather distant, ascending, scaberulous, few-flowered, naked below, about 1 cm. long or the lowermost sometimes as much as 2 cm.; glumes somewhat unequal, acuminate or awn-pointed, glabrous, about 1 mm. long; lemma oblong, 3-nerved, minutely apiculate, pubescent near the margins, 1.5 mm. long; palea about as long and as wide as the lemma, with a few hairs along the back.
Type locality: Orizaba, Mexico {Midler 1453).
Distribution: Dry or sandy fields and pine woods, Orizaba to Michoacan.