Flora of North America species comparison

30-100 cm, erect;

nodes glabrous.

2-8 m, erect, pubescent beneath the panicle;

nodes glabrous or pubescent.

glabrous, margins ciliate;

ligules 0.2-0.5 mm, membranous, ciliate;

blades (10)30-60 cm long, 2-8(12) mm wide, flat to folded, glabrous, margins ciliate basally.

glabrous or pubescent;

ligules 1.5-5 mm;

blades 23-125 cm long, (4)12-40 mm wide, flat, glabrous or pubescent.

all terminal, 6-20 cm long, 20-53 mm wide, fully exerted from the sheaths, erect, green to brown, deep purple, or stramineous to creamy-white;

rachises terete, with pubescent hairs.

terminal, 8-30.5 cm long, (10)30-50 mm wide, fully exerted from the leaf sheaths, erect, golden-yellow to dark purple;

rachises terete, pubescent.

5.5-8.4 mm, sessile or subsessile, glabrous;

pedicels to 0.1 mm;

lower glumes 0.2-1.4 mm, veinless;

upper glumes 2-4.9 mm, to 1/2 as long as the spikelet, 1-5-veined, acute to broadly acute;

lower florets sterile;

lower lemmas 4.9-8.1 mm, 7-9(10)-veined;

lower paleas absent;

upper lemmas 5.2-7.6 mm, 5-7-veined, acuminate;

anthers 3, 3-4.5 mm.

5.9-7 mm, pedicellate;

pedicels of terminal spikelets 0.2-0.4 mm, of other spikelets 1.8-3 mm;

lower glumes absent or to 0.8 mm;

upper glumes 0.8-3 mm, 0-1-veined;

lower florets sterile or staminate;

lower lemmas 4-5.3 mm, 3-5(6)-veined;

lower paleas 4-4.7 mm;

anthers absent or 2.2-3.1 mm, penicillate;

upper lemmas 4.5-7 mm, subcoriaceous, shiny, 5-7-veined, acuminate;

anthers 2.7-3.6 mm, penicillate.

1.8-2.2 mm.

9-16 per cm;

fascicle axes 1.5-5.6 mm, with a stipelike base of 1-5.6 mm and 1(2) spikelet(s);

outer bristles 13-19, 0.8-15.6 mm;

inner bristles 7-10, 11.2-30 mm, scabrous;

primary bristles 26.7-35 mm, scabrous, usually not noticeably longer than the other bristles.

30-40 per cm, disarticulating at maturity;

fascicle axes 0.5-1.5 mm, with 1-5 spikelets;

outer bristles 20-63, 1.5-10.3 mm, yellow or purple, scabrous;

inner bristles 4-6, 9.1-11.5 mm, yellow or purple, sparsely long-ciliate;

primary bristles 13-40 mm, noticeably longer than the other bristles, yellow or purple, scabrous.

= 18.

= 28.