Flora of North America species comparison

40-150 cm, erect, pubescent beneath the panicle;

nodes glabrous.

60-200 cm, erect;

nodes pubescent or glabrous.

pubescent or glabrous;

ligules 1-1.7 mm;

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

green, sometimes glaucous;

sheaths glabrous, margins ciliate;

ligules 0.5-1.1 mm;

blades 20-65 cm long, 2-3.5 mm wide, convolute or folded, scabrous, midvein noticeably thickened.

(6)8-32 cm long, 40-52 mm wide, erect or arching, pink to dark burgundy;

rachises pubescent.

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

rachises terete, scabrous.

4.5-7 mm, sessile or pedicellate;

pedicels to 0.1 mm;

lower glumes absent or to 0.3 mm, veinless;

upper glumes 1.2-3.6 mm, (0)1-veined;

lower florets usually sterile, sometimes staminate;

lower lemmas 4-6 mm, 3-veined, acuminate, midvein excurrent to 0.7 mm;

lower paleas usually absent, if present, to 4.4 mm;

anthers absent or 2.3-2.4 mm;

upper lemmas 4.5-6.7 mm, attenuate, 5-veined, midvein excurrent to 0.7 mm, margins glabrous;

anthers 2.1-2.7 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.

8-10 per cm;

fascicle axes 2.3-4.5 mm, with 1-4 spikelets;

outer bristles 28-65, 0.9-19 mm;

inner bristles 8-16, 8-27 mm, ciliate;

primary bristles 26.5-34.3 mm, ciliate, 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.

= 27.

= 54.