Flora of North America species comparison

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

nodes glabrous.

1.5-3 m, erect;

nodes pubescent.

pubescent or scabrous, margins ciliate;

ligules 1.3-2 mm;

blades 30-75 cm long, 19-45 mm wide, flat, glabrous, pseudopetiolate.

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 on the culms and axillary in the upper leaf sheaths, 2.2-9.5 cm long, 10-15 mm wide, fully exerted from the sheaths, flexible, drooping, green to stramineous;

rachises terete, scabrous or sparsely 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.

4-7 mm, sessile;

lower glumes 1.2-2.2 mm, 1(2)-veined, scabridulous and ciliolate distally;

upper glumes 1.8-3.3 mm, 3-veined, margins ciliolate;

lower florets sterile;

lower lemmas 4.8-6.8 mm, 5-8-veined;

lower paleas absent;

upper lemmas 4.6-5.5 mm, 5-veined;

upper paleas 2-3-veined;

anthers 1.2-1.5 mm.

2.5-2.8 mm long.

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.

5-13 per cm;

fascicle axes about 0.3 mm, with 1(2) spikelet(s);

outer bristles 8-33, 1.1-11 mm, brittle;

inner bristles absent;

primary bristles (11.5)15.7-26.5 mm, scabrous, noticeably longer than the other bristles.

= 27.

= 36.