Flora of North America species comparison

3-45 cm, decumbent, highly branching;

nodes glabrous.

1-1.5 m, erect, sometimes branching above, pubescent beneath the panicle;

nodes glabrous.

glabrous or pubescent;

ligules 1.3-2.2 mm;

blades 1-15 cm long, 1-6 mm wide, flat or folded, glabrous or pubescent.

burgundy (rarely green);

sheaths glabrous, margins ciliate;

ligules 0.5-0.8 mm;

blades 33-52 cm long, 6-11 mm wide, flat, antrorsely scabridulous, margins ciliate basally, midvein not noticeably thickened.

2-2.7 cm, axillary, concealed in the sheaths;

rachises flat, glabrous or scabrous.

23-32 cm long, 30-58 mm wide, fully exerted from the sheaths, flexible, drooping, burgundy (rarely pale or whitish-green);

rachises terete, pubescent.

10-22 mm, sessile or pedicellate, pedicels to 0.2 mm;

lower glumes usually absent, sometimes to 0.5 mm, veinless;

upper glumes 0-1.3(3.5) mm, veinless;

lower florets sterile;

lower lemmas 10-22 mm, 9-13-veined;

lower paleas usually absent;

upper lemmas 10-22 mm, 8-12-veined;

upper paleas 2-7-veined;

anthers 4.7-7 mm, long-exserted from the florets at anthesis.

5.3-6.5 mm;

pedicels 0.1-0.3 mm;

lower glumes 0.5-1 mm, veinless;

upper glumes 1.9-3.6 mm, 0-1-veined;

lower florets staminate;

lower lemmas 4.7-6.1 mm, 5(6)-veined;

lower paleas 4.5-5 mm;

anthers 2-2.5 mm;

upper florets not disarticulating at maturity;

upper lemmas 5.2-6.1 mm, 5-veined;

anthers 2.5-2.7 mm.

concealed by the lemma and palea at maturity.

1-6;

axes to 0.5 mm, with 1-2 spikelets;

outer and inner bristles alike, 6-15, 0.5-10.9 mm;

primary bristles 10-14 mm, usually not noticeably longer than the other bristles.

10-17 per cm, disarticulating at maturity;

fascicle axes 1-2 mm, with 1-3 spikelets;

outer bristles 43-68, 1.2-18.5 mm, terete, scabrous;

inner bristles 4-10, 11.7-25 mm, long-ciliate;

primary bristles 21.3-33.6 mm, ciliate, noticeably longer than the other bristles.

= 36.

= 54.