Flora of North America species comparison

30-100 cm, erect;

nodes glabrous.

60-200 cm, erect;

nodes pubescent or glabrous.

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.

pubescent or glabrous;

ligules 1-1.7 mm;

blades 20-50 cm long, 4-12 mm wide, flat to involute, glabrous, pubescent, or scabrous.

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, 6-40 cm long, 20-46 mm wide, fully exerted from the sheaths, erect, white to stramineous;

rachises terete, scabrous.

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.

3-8 mm, sessile or pedicellate, glabrous;

pedicels to 0.2 mm;

lower glumes absent or 1.2-1.4 mm, veinless;

upper glumes 0.8-2 mm, 0-1-veined;

lower florets sterile;

lower lemmas 3-7.7 mm, 3-5(7)-veined;

lower paleas absent;

upper lemmas 3-6.8 mm, 5-veined;

anthers 2.6-3.5 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.

21-46 per cm;

fascicle axes 0.4-0.6(2) mm, with 1(2) spikelet(s);

outer bristles 15-20, 2.5-8 mm;

inner bristles 8-10, 4-9 mm, scabrous;

primary bristles 12.5-20 mm, noticeably longer than the other bristles.

= 18.

= 54.