Flora of North America species comparison

60-120 cm, rarely branched distally, scabrous below the nodes and panicles.

30-90 cm;

nodes glabrous, strigose, or with appressed hairs.

keeled, glabrous, usually with a few white hairs at the throat;

ligules 2-4 mm, densely ciliate;

blades 15-20 cm long, 7-15 mm wide, flat, adaxial surface scabrous.

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.

10-30 cm long, 1-2 cm wide, uniformly thick from the base to the apex, dense, rarely lobed basally;

rachises scabrous and loosely pilose;

bristles usually solitary, 10-20 mm, soft, antrorsely scabrous.

5-20 cm, erect, slender, interrupted;

rachises scabrous;

bristles 2-8 mm.

2-2.3 mm, subspherical.

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

1/3 – 1/2 as long as the spikelets, 3-5-veined;

upper glumes about 3/4 as long as the spikelets, 5-7-veined;

lower lemmas equaling the upper lemmas, 5-veined;

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

upper lemmas transversely rugose;

upper paleas convex, ovate.

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.

= 54.