Flora of North America species comparison

50-200 cm.

30-90 cm;

nodes glabrous, strigose, or with appressed hairs.

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.

with papillose-based hairs, sometimes nearly glabrous, margins ciliate distally;

ligules 1-2 mm, of stiff hairs;

blades 4-30 cm long, 1-7 mm wide, involute, stiff, scabridulous and narrowed basally.

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

rachises densely villous;

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

5-20 cm, erect, slender, interrupted;

rachises scabrous;

bristles 2-8 mm.

2.5-3 mm.

2.1-4.5 mm, elliptic to obovate, randomly distributed on the branch axes.

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.

1/2 as long as the spikelets, 5-7-veined;

upper glumes equaling the upper lemmas, 7-9-veined;

lower lemmas equaling the upper lemmas;

lower paleas absent;

upper lemmas indurate, finely and transversely rugose;

upper paleas similar to the upper lemmas.

= 36.