Flora of North America species comparison

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

nodes glabrous.

30-200 cm, erect, branching;

nodes glabrous.

glabrous, margins ciliate;

ligules 1.5-2.7 mm;

blades 15-55 cm long, 4-18 mm wide, flat, glabrous or pubescent.

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, 10-25 cm long, 15-30 mm wide, fully exerted from the sheaths, erect to drooping, white, yellow, light brown, or pink to deep purple;

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.

3-4.5 mm, sessile;

lower glumes absent or to 2 mm, veinless;

upper glumes 3-4.5 mm, glabrous, 5-7-veined, 3-lobed;

lower florets sterile or staminate;

lower lemmas 3-3.9 mm, 5-7-veined, apices lobed;

lower paleas 2.9-3.7 mm;

anthers absent or 1.7-2 mm;

upper florets disarticulating at maturity;

upper lemmas 1.7-3 mm, coriaceous, shiny, 5-veined, apices ciliate;

anthers 1.3-2.1 mm.

about 1.7 mm, concealed by the lemma and palea at maturity.

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.

33-45 per cm, disarticulating at maturity;

fascicles axes 0.2-0.5 mm, with 1 spikelet;

outer bristles 13-30, 1.3-5 mm, scabrous;

inner bristles 6-14, 4.3-11.5 mm, long ciliate;

primary bristles 14-25 mm, long-ciliate, noticeably longer than the other bristles.

= 27.

= 18, 36, 45, 48, 52, 53, 54, 56, 78.