Flora of North America species comparison

25-60 cm.

30-70 cm, wiry, much branched distally.

glabrous throughout;

ligules 1-2 mm, of hairs, white;

blades usually less than 10 cm long, 5-10 mm wide, flat, broad basally, abaxial surfaces conspicuously strigose with papillose-based hairs, tapering abruptly at the apices;

bristles solitary, about 5 mm, retrorsely scabrous.

keeled, margins ciliate distally;

collars glabrate;

ligules to 1 mm, densely ciliate;

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

2-6 cm, verticillate, green to purple;

rachises retrorsely rough hispid.

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

rachises scabrous to puberulent;

bristles solitary, 3-10 mm.

1.5-2.2 mm.

1.9-2.1 mm.

about 1/2 as long as the spikelets, obtuse, 1(3)-veined;

upper glumes nearly as long as the spikelets, 5-7-veined;

lower lemmas equaling to slightly exceeding the upper lemmas;

lower paleas less than 1/2 as long as the spikelets, scalelike;

upper lemmas finely and 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.

= 18.

= 36.