Flora of North America species comparison

50-300 cm, erect, branching;

nodes glabrous.

60-200 cm, erect;

nodes pubescent or 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.

pubescent or glabrous;

ligules 1-1.7 mm;

blades 20-50 cm long, 4-12 mm wide, flat to involute, glabrous, pubescent, or scabrous.

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

rachises terete, densely pubescent.

terminal, 6-40 cm long, 20-46 mm wide, fully exerted from the sheaths, erect, white to stramineous;

rachises terete, scabrous.

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.

3-8 mm, sessile or pedicellate, glabrous;

pedicels to 0.2 mm;

lower glumes absent or 1.2-1.4 mm, veinless;

upper glumes 0.8-2 mm, 0-1-veined;

lower florets sterile;

lower lemmas 3-7.7 mm, 3-5(7)-veined;

lower paleas absent;

upper lemmas 3-6.8 mm, 5-veined;

anthers 2.6-3.5 mm.

2-5.5 mm long, 1.6-3.2 mm wide, protruding from 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.

21-46 per cm;

fascicle axes 0.4-0.6(2) mm, with 1(2) spikelet(s);

outer bristles 15-20, 2.5-8 mm;

inner bristles 8-10, 4-9 mm, scabrous;

primary bristles 12.5-20 mm, noticeably longer than the other bristles.

= 14.

= 54.