Flora of North America species comparison

1-2 m.

50-200 cm.

strigose, margins with stiff hairs;

collars hispid;

ligules about 2 mm, of hairs;

blades to 50 cm long, 20-80 mm wide, plicate, tapering at both ends, abaxial surfaces sparsely strigose, adaxial surfaces short pubescent near the base.

glabrous, fringed with white hairs;

ligules about 2 mm;

blades 15-30 cm long, 10-20 mm wide, usually with soft hairs on the adaxial surface.

to 40 cm, open;

branches 6-10 cm, loosely flexible, axes scabrous;

bristles solitary, usually present only below the terminal spikelet on each branch, occasionally below non-terminal spikelets, about 5 mm.

6-20 cm, densely spicate, arching and drooping from near the base;

rachises densely villous;

bristles (1)3(6), about 10 mm.

3-4 mm, elliptic, acuminate.

2.5-3 mm.

1/2 as long as the spikelets, obtuse, 3-4-veined;

upper glumes nearly equaling the upper lemmas, 7-veined, acute;

lower lemmas exceeding the upper lemmas, 5-veined, apices involute;

lower paleas nearly equaling the lower lemmas in length and width;

upper lemmas obscurely transversely rugose, yellow, apiculate.

about 1 mm, acute, 3-veined;

upper glumes about 2.2 mm, obtuse, 5-veined;

lower lemmas about 2.8 mm, obtuse;

lower paleas about 2/3 as long as the lower lemmas;

upper lemmas pale, finely and distinctly transversely rugose;

upper paleas similar to the upper lemmas.

= 54.

= 36.