Flora of North America species comparison

40-150 cm, erect, pubescent beneath the panicle;

nodes glabrous.

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

nodes 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.

green, sometimes glaucous;

sheaths glabrous, margins ciliate;

ligules 0.5-1.1 mm;

blades 20-65 cm long, 2-3.5 mm wide, convolute or folded, scabrous, midvein noticeably thickened.

(6)8-32 cm long, 40-52 mm wide, erect or arching, pink to dark burgundy;

rachises 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.

4.5-7 mm, sessile or pedicellate;

pedicels to 0.1 mm;

lower glumes absent or to 0.3 mm, veinless;

upper glumes 1.2-3.6 mm, (0)1-veined;

lower florets usually sterile, sometimes staminate;

lower lemmas 4-6 mm, 3-veined, acuminate, midvein excurrent to 0.7 mm;

lower paleas usually absent, if present, to 4.4 mm;

anthers absent or 2.3-2.4 mm;

upper lemmas 4.5-6.7 mm, attenuate, 5-veined, midvein excurrent to 0.7 mm, margins glabrous;

anthers 2.1-2.7 mm.

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.

1.8-2.2 mm.

8-10 per cm;

fascicle axes 2.3-4.5 mm, with 1-4 spikelets;

outer bristles 28-65, 0.9-19 mm;

inner bristles 8-16, 8-27 mm, ciliate;

primary bristles 26.5-34.3 mm, ciliate, 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.

= 27.

= 28.