Flora of North America species comparison

1-2 m.

25-50 cm;

nodes pubescent.

strigose, margins with stiff hairs;

collars hispid;

ligules about 2 mm, of hairs;

blades to 50 cm long, 20-80 mm wide, plicate, tapering at both ends, abaxial surfaces sparsely strigose, adaxial surfaces short pubescent near the base.

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.

to 40 cm, open;

branches 6-10 cm, loosely flexible, axes scabrous;

bristles solitary, usually present only below the terminal spikelet on each branch, occasionally below non-terminal spikelets, about 5 mm.

5-12 cm, loosely spicate;

rachises scabrous.

3-4 mm, elliptic, acuminate.

1.8-2 mm.

1/2 as long as the spikelets, obtuse, 3-4-veined;

upper glumes nearly equaling the upper lemmas, 7-veined, acute;

lower lemmas exceeding the upper lemmas, 5-veined, apices involute;

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

upper lemmas obscurely transversely rugose, yellow, apiculate.

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.

= 54.

= unknown.