Flora of North America species comparison

50-200 cm.

30-70 cm, wiry, much branched distally.

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.

keeled, margins ciliate distally;

collars glabrate;

ligules to 1 mm, densely ciliate;

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

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

rachises densely villous;

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

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

rachises scabrous to puberulent;

bristles solitary, 3-10 mm.

2.5-3 mm.

1.9-2.1 mm.

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.

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.

= 36.

= 36.