Flora of North America species comparison

1-2 m.

30-70 cm, wiry, much branched distally.

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.

keeled, margins ciliate distally;

collars glabrate;

ligules to 1 mm, densely ciliate;

blades 5-15 cm long, 2-4 mm wide, flat, scabrous.

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.

2-6 cm, spikelike, basal portion rarely lobed, tapering distally;

rachises scabrous to puberulent;

bristles solitary, 3-10 mm.

3-4 mm, elliptic, acuminate.

1.9-2.1 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 1/2 as long as the spikelets, 3-veined;

upper glumes about 3/4 as long as the spikelets, 5-veined;

lower lemmas nearly equaling the upper lemmas, 5-veined;

lower paleas rudimentary to 1/2 as long as the upper paleas;

upper lemmas finely and transversely rugose;

upper paleas narrow.

= 54.

= 36.