Flora of North America species comparison

30-130 cm.

60-120 cm;

nodes pilose, with appressed hairs.

glabrous;

ligules ciliate;

blades 4-10 mm wide, loosely twisted, adaxial surfaces with papillose-based hairs basally.

glabrous or hispid;

ligules 1-2 mm, hispid;

blades 15-30 cm long, 6-15 mm wide, flat or folded, scabrous, often pubescent.

3-15 cm, uniformly thick, erect, densely spicate;

rachises hispid;

bristles 4-12, 3-8 mm, antrorsely scabrous.

15-25 cm, open, tapering from the base;

rachises pubescent to villous;

lower branches to 3 cm;

bristles usually solitary, 10-35 mm, divergent.

2-3.4 mm, strongly turgid.

2.2-2.5 mm, elliptical.

about 1/3 as long as the spikelets, 3-veined, acute;

upper glumes about 1/2 as long as the spikelets, 5-veined, ovate;

upper florets often staminate;

lower lemmas equaling the upper lemmas;

lower paleas equaling the lower lemmas, broad;

upper lemmas conspicuously exposed, strongly transversely rugose.

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

upper glumes from 3/4 as long as to equaling the upper florets, 5-veined;

lower lemmas equaling the upper lemmas, 5-veined;

lower paleas about 1/2 as long as the upper paleas, lanceolate;

upper lemmas finely cross-wrinkled, shortly apiculate;

upper paleas ovate-lanceolate.

= 36, 72.

= 54.