Flora of North America species comparison

10-150 cm, erect, sometimes branching at the aerial nodes, glabrous, sometimes scabrous 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 or glaucous;

sheaths glabrous or pubescent, margins ciliate;

ligules 0.5-3 mm, membranous, ciliate;

blades 3-50 cm long, 2-13 mm wide, flat, glabrous or pubescent, margins ciliate or glabrous basally.

2-20 cm long, 4-35 mm wide, fully exerted from the sheaths, erect, green, brown, brown-purple, or dark purple;

rachises terete, scabrous.

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

rachises terete, puberulent at the base.

2.5-5.6 mm, sessile, glabrous;

lower glumes 1-3 mm, 0-1-veined;

upper glumes 1.3-3.4 mm, about 1/2 as long as the spikelet, (0)1-3-veined;

lower florets staminate or sterile;

lower lemmas 2.5-5.3 mm, 3-7-veined;

lower paleas absent or 2.5-5 mm;

anthers absent or about 1.4 mm;

upper florets not disarticulating at maturity;

upper lemmas 2.2-5.4 mm, (3)5(6)-veined, margins glabrous;

anthers 1.4-2.7 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.

1.2-1.9 mm long, 0.4-1 mm wide, concealed by the lemma and palea at maturity.

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

11-37 per cm, disarticulating at maturity;

fascicle axes 0.2-1.5 cm, with 1-12 spikelets;

outer bristles 16-89, 0.3-11.7 mm, many exceeding the spikelets;

inner bristles 7-20, 3.8-13.8 mm, fused to 1/4 of their length, flattened, grooved, ciliate;

primary bristles 10.5-23 mm, long-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.

= 36, 45.

= 24, 30, 32, 35, 36.