Flora of North America species comparison

30-130 cm.

50-200 cm;

nodes pubescent.

glabrous;

ligules ciliate;

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

with ciliate margins distally;

ligules about 1 mm, ciliate;

blades 10-25 mm wide, plicate, both surfaces scabrous, adaxial surfaces with parallel rows of papillose-based hairs.

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

rachises hispid;

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

to 20 cm, open;

branches 2-4 cm, axes villous;

bristles solitary, usually only present below the terminal spikelet on each branch, occasionally below non-terminal spikelets, 5-8 mm, flexible.

2-3.4 mm, strongly turgid.

2.5-3 mm.

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 mm, orbicular, 3-5-veined;

upper glumes about 2 mm, ovate, 7-veined;

lower lemmas about 2.5 mm, slightly coriaceous, acute;

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

upper lemmas about 2.3 mm, strongly transversely rugose;

upper paleas enclosed.

= 36, 72.

= 54, 56.