Flora of North America species comparison

60-250 cm tall, 5-8 mm thick below;

nodes pilose.

40-80(150) cm.

more or less keeled, with scattered hairs, particularly below the collar;

ligules 2-3.5 mm, obtuse, lacerate and shortly pubescent;

blades 20-60 cm long, 4-10 mm wide, stiff, flat or folded, abaxial surfaces with scattered fine hairs, adaxial surfaces glabrous.

evenly distributed;

ligules 0.5-1 mm;

blades 20-80 cm long, 0.5-3 cm wide, adaxial surfaces densely pilose basally, midribs prominent, whitish.

15-40 cm long, 8-16 cm wide, white to yellowish-brown, usually with more than 15 branches;

rachises 4-10 cm;

nodes pilose;

branches 10-35 cm long, about 10 mm wide, sometimes branching at the base.

10-20 cm, flabellate, golden brown, with more than 15 branches;

rachises about 1/2 as long as the panicles;

branches 3.5-10.5 cm, ascending.

4-6 mm;

callus hairs 2-4 times as long as the spikelets, copious, white.

2-2.8 mm;

callus hairs 3-4 times longer than the spikelets, golden brown.

2-keeled above, margins densely pilose distally, hairs to 15 mm;

upper glumes 4-5 mm, 3-veined, margins ciliate distally;

awns of upper lemmas absent or short, not exceeding the glumes.

hairy on the lower margins, hairs to 3 times longer than the glumes;

awns of upper lemmas 9-13 mm, exceeding the glumes, flexuous to weakly geniculate.

pedicels 1.5-3 mm;

longer pedicels 3-7 mm, strongly curved at maturity.

pedicels 1.5-2 mm;

longer pedicels 2.5-3.5 mm.

= 38, 57, 64, 76, 95.

= 40.