Flora of North America species comparison

30-100 cm, erect;

nodes glabrous.

40-150 cm, erect, branching;

nodes glabrous.

glabrous, margins ciliate;

ligules 0.2-0.5 mm, membranous, ciliate;

blades (10)30-60 cm long, 2-8(12) mm wide, flat to folded, glabrous, margins ciliate basally.

glabrous, margins ciliate;

ligules 1-2 mm;

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

all terminal, 6-20 cm long, 20-53 mm wide, fully exerted from the sheaths, erect, green to brown, deep purple, or stramineous to creamy-white;

rachises terete, with pubescent hairs.

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

rachises terete, puberulent at the base.

5.5-8.4 mm, sessile or subsessile, glabrous;

pedicels to 0.1 mm;

lower glumes 0.2-1.4 mm, veinless;

upper glumes 2-4.9 mm, to 1/2 as long as the spikelet, 1-5-veined, acute to broadly acute;

lower florets sterile;

lower lemmas 4.9-8.1 mm, 7-9(10)-veined;

lower paleas absent;

upper lemmas 5.2-7.6 mm, 5-7-veined, acuminate;

anthers 3, 3-4.5 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.

9-16 per cm;

fascicle axes 1.5-5.6 mm, with a stipelike base of 1-5.6 mm and 1(2) spikelet(s);

outer bristles 13-19, 0.8-15.6 mm;

inner bristles 7-10, 11.2-30 mm, scabrous;

primary bristles 26.7-35 mm, scabrous, usually not 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.

= 18.

= 24, 30, 32, 35, 36.