Muhlenbergia straminea
screwleaf muhly
25-70 cm, erect, rounded near the base;
internodes glabrous.
glabrous, stiff, becoming flattened, ribbonlike or papery, and conspicuously spirally coiled when old;
ligules (6)10-20 mm, hyaline, acuminate, lacerate;
blades 7-25 cm long, 1-4 mm wide, flat to involute, scabrous abaxially, spiculate adaxially.
8-25 cm long, 0.5-3 cm wide, not dense;
primary branches 0.6-8 cm, appressed or diverging up to 30° from the rachises;
pedicels 0.2-5 mm, scabrous.
3.5-7 mm, yellowish to pale greenish.
(3)3.5-6(7) mm, scabridulous, unawned or awn-tipped;
lower glumes shorter than the upper glumes, 1-veined;
upper glumes equaling or exceeding the florets, 3-veined, acuminate to acute, occasionally 3-toothed, awned, awns to 1.5 mm;
lemmas 3.5-5.5(6) mm, lanceolate, pubescent on the lower 1/2 of the midveins and margins, hairs to 1 mm, apices scabrous, acuminate, awned, awns 12-27 mm, flexuous;
paleas 3.5-5.5 mm, lanceolate, pilose between the veins, apices scabridulous, acuminate;
anthers 2-3.5 mm, purple.
1.9-2 mm, fusiform, light brown.
= unknown.
Muhlenbergia straminea
Muhlenbergia straminea grows on rolling, rocky slopes, volcanic tuffs, canyon bottoms, and ridges, usually in open pine forests, at elevations of 1800-2600 m. It is known only from the southwestern United States.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
WildflowerSearch
iNaturalist
USDA Plants Database
