Flora of North America species comparison

50-300 cm, erect, branching;

nodes glabrous.

2-8 m, erect, pubescent beneath the panicle;

nodes glabrous or 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.

glabrous or pubescent;

ligules 1.5-5 mm;

blades 23-125 cm long, (4)12-40 mm wide, flat, glabrous or pubescent.

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

rachises terete, densely pubescent.

terminal, 8-30.5 cm long, (10)30-50 mm wide, fully exerted from the leaf sheaths, erect, golden-yellow to dark purple;

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.

5.9-7 mm, pedicellate;

pedicels of terminal spikelets 0.2-0.4 mm, of other spikelets 1.8-3 mm;

lower glumes absent or to 0.8 mm;

upper glumes 0.8-3 mm, 0-1-veined;

lower florets sterile or staminate;

lower lemmas 4-5.3 mm, 3-5(6)-veined;

lower paleas 4-4.7 mm;

anthers absent or 2.2-3.1 mm, penicillate;

upper lemmas 4.5-7 mm, subcoriaceous, shiny, 5-7-veined, acuminate;

anthers 2.7-3.6 mm, penicillate.

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

1.8-2.2 mm.

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.

30-40 per cm, disarticulating at maturity;

fascicle axes 0.5-1.5 mm, with 1-5 spikelets;

outer bristles 20-63, 1.5-10.3 mm, yellow or purple, scabrous;

inner bristles 4-6, 9.1-11.5 mm, yellow or purple, sparsely long-ciliate;

primary bristles 13-40 mm, noticeably longer than the other bristles, yellow or purple, scabrous.

= 14.

= 28.