Flora of North America species comparison

25-60 cm.

25-50 cm;

nodes pubescent.

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.

glabrous, margins ciliate distally;

ligules 1-2 mm, ciliate;

blades 7-15 cm long, 5-8 mm wide, flat, scabrous, abaxial surface conspicuously hispid over the veins with papillose-based hairs, adaxial surface sparsely hispid over the veins;

bristles solitary, 5-15 mm, flexible.

2-6 cm, verticillate, green to purple;

rachises retrorsely rough hispid.

5-12 cm, loosely spicate;

rachises scabrous.

1.5-2.2 mm.

1.8-2 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 1/3 as long as the spikelets, 3-veined, lateral veins coalescing with the central vein below the apices;

upper glumes about 2/3 as long as the upper lemmas, 5-veined, obtuse;

lower paleas equaling the lower lemmas, broad;

upper lemmas very strongly and coarsely transversely rugose;

upper paleas similar to the upper lemmas.

= 18.

= unknown.