Flora of North America species comparison

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

nodes glabrous.

16-75 cm, erect;

nodes glabrous.

glabrous, margins ciliate;

ligules 1-1.3 mm;

blades 5-40 cm long, 2-4.5 mm wide, flat to folded, glabrous, pubescent, or scabrous, margins ciliate or glabrous basally.

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, 4-11.5 cm long, 50-75 mm wide, fully exerted from the sheaths, erect, white;

rachises terete, pubescent (basally).

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.

9-12 mm, glabrous;

pedicels 0.1-0.4 mm;

lower glumes 0.3-1.3 mm, veinless;

upper glumes 2.5-5.2 mm, 1(3)-veined;

lower florets staminate or sterile;

lower lemmas 7.5-10.5 mm, 7-9(10)-veined;

lower paleas absent or 5.5-8.5 mm;

anthers absent or 3.8-4.5 mm;

upper lemmas 9-11 mm, 7-veined, apices scabridulous;

anthers 3.5-5 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.

7-11 per cm;

fascicle axes 1.5-2.5 mm, with 1-4 spikelets;

outer bristles (0)1-8, 1-13.5 mm;

inner bristles 23-41, 13-50.5 mm, densely plumose;

primary bristles 40-50 mm, ciliate, usually not noticeably longer than the other bristles.

= 27.

= 45.