Flora of North America species comparison

50-300 cm, erect, branching;

nodes glabrous.

50-200 cm, erect, pubescent beneath the panicle;

nodes pubescent.

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.

green or glaucous;

sheaths antrorsely scabridulous, mostly glabrous, margins ciliate;

ligules 1-1.7 mm;

blades 25-50 cm long, 3-9 mm wide, flat, antrorsely scabridulous, glabrous or pubescent, margins ciliate or glabrous basally, midvein not noticeably thickened.

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

rachises terete, densely pubescent.

11.5-37.3 cm long, 35-50 mm wide, fully exerted from the sheaths, erect to slightly arching, white (sometimes purplish-tinged);

rachises terete, pubescent.

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.

5.6-6.7 mm;

pedicels 0.1-0.2 mm;

lower glumes 1-2.2 mm, veinless;

upper glumes 3.1-5.5 mm, 1-3-veined;

lower florets staminate;

lower lemmas 5.2-6.5 mm, 4-6-veined;

lower paleas 3.8-5 mm;

anthers 2.3-3 mm;

upper florets not disarticulating at maturity;

upper lemmas 5.2-6.2 mm, margins glabrous, 5-veined;

upper paleas bifid, teeth 0.3-0.8 mm;

anthers 1.9-2.9 mm.

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

concealed by the 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.

5-12 per cm;

fascicle axes 1-6 mm, with 1-10 spikelets;

outer bristles 0-24, 0.8-9.6 mm, terete, scabrous;

inner bristles 6-20, 5.6-17.5 mm, ciliate;

primary bristles 12.2-23.8 mm, ciliate, noticeably longer than the other bristles.

= 14.

= 18, 27, 36, 45, 54.