Flora of North America species comparison

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

nodes glabrous.

40-150 cm, erect, branching;

nodes glabrous.

glabrous, margins ciliate;

ligules 1-2 mm;

blades 6-30 cm long, 4-15 mm wide, flat, pubescent, basal margins ciliate.

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 and axillary, (5)8-19 cm long, 30-35 mm wide, erect, pink to purple;

rachises terete, puberulent at the base.

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.

3.4-4.8 mm;

pedicels 0.5-3.5 mm;

lower glumes 1.2-2.4 mm, 0-1-veined;

upper glumes 3.4-4.8 mm, glabrous, 5-veined;

lower florets staminate or sterile;

lower lemmas 3.1-4 mm, 5(6)-veined;

lower paleas 2.5-3.5 mm;

anthers 3, 2.2-2.5 mm;

upper florets disarticulating at maturity;

upper lemmas 2-2.7 mm, coriaceous, smooth, shiny, 5-veined, margins glabrous, apices ciliate;

anthers 1.5-2.5 mm.

about 1.7 mm, concealed by 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.

14-15 per cm, disarticulating at maturity;

fascicle axes 1.5-2.5 mm, with (1)2-5 spikelets;

outer bristles 10-20, 1.2-2 mm, scabrous;

inner bristles 40-90, 2.2-14 mm, long ciliate;

primary bristles 15-25 mm, long-ciliate, noticeably longer than the other bristles.

= 27.

= 24, 30, 32, 35, 36.