Flora of North America species comparison

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

nodes glabrous.

1.5-2(4) m, decumbent, geniculate, 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.

green;

sheaths glabrous;

ligules 0.5-1.5 mm;

blades 23-40 cm long, 7-12 mm wide, flat, glabrous.

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

rachises pubescent.

terminal, 15-22 cm long, 15-21 mm wide, fully exerted from the sheaths, flexible, drooping, green;

rachises terete, puberulent.

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.

5.2-6.6 mm, sessile;

lower glumes 1.7-2.9 mm, 1-veined;

upper glumes 4.5-6.3 mm, about as long as the spikelets, (7)9-veined;

lower florets sterile;

lower lemmas 4.8-6 mm, 7-veined, acuminate to attenuate, midvein excurrent for 0-0.6 mm;

lower paleas absent;

upper lemmas 4.9-6 mm, 5-veined, acuminate to attenuate, midvein excurrent for 0-0.6 mm;

anthers 1.3-1.7 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.

24-49 per cm;

fascicle axes 0.4-0.5 mm, with 1 spikelet;

most bristles only slightly longer than the spikelets;

outer bristles 27-41, 2.4-8.5 mm;

inner bristles 3-5, 6.2-11 mm, scabrous;

primary bristles 7.6-11.8 mm, not noticeably longer than the other bristles, scabrous.

= 27.

= 36.