Flora of North America species comparison

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

nodes glabrous.

100-300 cm, erect, branching;

nodes glabrous.

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.

burgundy;

sheaths glabrous;

ligules 0.1-0.3 mm;

blades 30-53.5 cm long, (15) 18-35 mm wide, flat, glabrous.

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

rachises pubescent.

terminal, (15.5)18-40 cm long, 32-50 mm wide, fully exerted from the sheaths, flexible, drooping, burgundy;

rachises terete, shortly pubescent.

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.

4.4-4.9 mm, sessile or pedicellate, glabrous;

pedicels to 0.1 mm;

lower glumes 1.1 - 1.3 mm, veinless;

upper glumes 2.1 - 2.8 mm, usually about 1/2 as long as the spikelets, 1-3-veined;

lower florets staminate (sterile);

lower lemmas 4-4.5 mm, 5-veined;

lower paleas absent or to 2.6 mm;

anthers absent or 1.4-1.6 mm;

upper lemmas 4.3-4.8 mm, 5-veined;

anthers 1.6-1.8 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.

17-22 per cm;

fascicle axes 0.5-0.7 mm, with 1 spikelet;

outer bristles 21-40, 1.2-22.3 mm, scabrous;

inner bristles absent;

primary bristles 20-23 mm, not noticeably longer than the other bristles, scabrous.

= 27.

= 68.