Flora of North America species comparison

3-45 cm, decumbent, highly branching;

nodes glabrous.

60-200 cm, erect;

nodes pubescent or 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.

pubescent or glabrous;

ligules 1-1.7 mm;

blades 20-50 cm long, 4-12 mm wide, flat to involute, glabrous, pubescent, or scabrous.

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

rachises flat, glabrous or scabrous.

terminal, 6-40 cm long, 20-46 mm wide, fully exerted from the sheaths, erect, white to stramineous;

rachises terete, scabrous.

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.

3-8 mm, sessile or pedicellate, glabrous;

pedicels to 0.2 mm;

lower glumes absent or 1.2-1.4 mm, veinless;

upper glumes 0.8-2 mm, 0-1-veined;

lower florets sterile;

lower lemmas 3-7.7 mm, 3-5(7)-veined;

lower paleas absent;

upper lemmas 3-6.8 mm, 5-veined;

anthers 2.6-3.5 mm.

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.

21-46 per cm;

fascicle axes 0.4-0.6(2) mm, with 1(2) spikelet(s);

outer bristles 15-20, 2.5-8 mm;

inner bristles 8-10, 4-9 mm, scabrous;

primary bristles 12.5-20 mm, noticeably longer than the other bristles.

= 36.

= 54.