Flora of North America species comparison

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

nodes glabrous.

1-1.5 m, erect, sometimes branching above, pubescent beneath the panicle;

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 (rarely green);

sheaths glabrous, margins ciliate;

ligules 0.5-0.8 mm;

blades 33-52 cm long, 6-11 mm wide, flat, antrorsely scabridulous, margins ciliate basally, midvein not noticeably thickened.

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

rachises pubescent.

23-32 cm long, 30-58 mm wide, fully exerted from the sheaths, flexible, drooping, burgundy (rarely pale or whitish-green);

rachises terete, 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.

5.3-6.5 mm;

pedicels 0.1-0.3 mm;

lower glumes 0.5-1 mm, veinless;

upper glumes 1.9-3.6 mm, 0-1-veined;

lower florets staminate;

lower lemmas 4.7-6.1 mm, 5(6)-veined;

lower paleas 4.5-5 mm;

anthers 2-2.5 mm;

upper florets not disarticulating at maturity;

upper lemmas 5.2-6.1 mm, 5-veined;

anthers 2.5-2.7 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.

10-17 per cm, disarticulating at maturity;

fascicle axes 1-2 mm, with 1-3 spikelets;

outer bristles 43-68, 1.2-18.5 mm, terete, scabrous;

inner bristles 4-10, 11.7-25 mm, long-ciliate;

primary bristles 21.3-33.6 mm, ciliate, noticeably longer than the other bristles.

= 27.

= 54.