Flora of North America species comparison

50-300 cm, erect, branching;

nodes glabrous.

40-150 cm, erect, branching;

nodes glabrous.

glabrous or pubescent, with or without ciliate margins;

ligules 2-5 mm;

blades 15-100 cm long, 7-70 mm wide, flat, glabrous or pubescent.

glabrous, margins ciliate;

ligules 1-2 mm;

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

terminal, 4-200 cm long, 2-70 mm wide, fully exerted from the sheaths, erect;

rachises terete, densely pubescent.

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

rachises terete, puberulent at the base.

3-7 mm;

pedicels 0.6-1.8 mm;

lower glumes absent or to 1.5 mm, veinless;

upper glumes 0.5-3.5 mm, 3-5-veined;

lower florets staminate or sterile;

lower lemmas 1.5-6 mm, glabrous, 3-7-veined, margins ciliate;

lower paleas vestigial or fully developed, margins ciliate;

anthers 2.2-2.5 mm, penicillate;

upper florets coriaceous, shiny;

upper lemmas 4.3-7 mm, 5-7(9)-veined, margins ciliate;

upper paleas 3.4-3.9 mm, pubescent, at least near the base, margins ciliate;

anthers 2-2.2 mm, penicillate.

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.

2-5.5 mm long, 1.6-3.2 mm wide, protruding from the lemma and palea at maturity.

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

33-160 per cm;

fascicle axes 1-28 mm, persistent, with 1-9 spikelets;

outer bristles 44-131, 0.5-6 mm;

inner bristles 6-19, 4-6 mm, plumose;

primary bristles 5.5-6.3, ciliate, sometimes 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.

= 14.

= 24, 30, 32, 35, 36.