Flora of North America species comparison

3-45 cm, decumbent, highly branching;

nodes glabrous.

40-150 cm, erect, branching;

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.

glabrous, margins ciliate;

ligules 1-2 mm;

blades 6-30 cm long, 4-15 mm wide, flat, pubescent, basal margins ciliate.

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

rachises flat, glabrous or scabrous.

terminal and axillary, (5)8-19 cm long, 30-35 mm wide, erect, pink to purple;

rachises terete, puberulent at the base.

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.

3.4-4.8 mm;

pedicels 0.5-3.5 mm;

lower glumes 1.2-2.4 mm, 0-1-veined;

upper glumes 3.4-4.8 mm, glabrous, 5-veined;

lower florets staminate or sterile;

lower lemmas 3.1-4 mm, 5(6)-veined;

lower paleas 2.5-3.5 mm;

anthers 3, 2.2-2.5 mm;

upper florets disarticulating at maturity;

upper lemmas 2-2.7 mm, coriaceous, smooth, shiny, 5-veined, margins glabrous, apices ciliate;

anthers 1.5-2.5 mm.

about 1.7 mm, concealed by 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.

14-15 per cm, disarticulating at maturity;

fascicle axes 1.5-2.5 mm, with (1)2-5 spikelets;

outer bristles 10-20, 1.2-2 mm, scabrous;

inner bristles 40-90, 2.2-14 mm, long ciliate;

primary bristles 15-25 mm, long-ciliate, noticeably longer than the other bristles.

= 36.

= 24, 30, 32, 35, 36.