Flora of North America species comparison

3-45 cm, decumbent, highly branching;

nodes glabrous.

1.5-3 m, erect;

nodes pubescent.

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 scabrous, margins ciliate;

ligules 1.3-2 mm;

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

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

rachises flat, glabrous or scabrous.

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.

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.

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.

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.

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.

= 36.

= 36.