Flora of North America species comparison

10-90 cm, sometimes decumbent and rooting at the lower nodes.

15-80 cm, ascending or geniculate, not branched.

glabrous, smooth;

ligules to 5 mm;

blades 2-13 cm long, 1-6 mm wide.

smooth or scabrous;

ligules 2-5 mm, membranous or hyaline, sometimes retrorsely scabridulous;

blades 3-15 cm long, 1.5-8 mm wide, flat to convolute, scabrous, apices acute to sharp.

2-10 cm, ovate-oblong to pyramidal, dense but interrupted, pale green to purplish;

pedicels not developed;

stipes 0.1-0.6 mm.

3-25 cm long, 1-8 cm wide, dense, glomerate, interrupted near the base;

pedicels not developed;

stipes 0.6-1.5 mm.

1.5-2 mm, scabrous on the back and keel, apices obtuse or truncate, unawned;

lemmas about 1 mm, erose, unawned;

paleas subequal to the lemmas;

anthers 0.3-0.5 mm.

1.8-4 mm, scabridulous on the sides, keels echinate, not tapering to the apices, apices acute, unlobed, awned, awns 0.2-2.5 mm;

lower glumes 1.8-4 mm;

upper glumes 1.6-3.5 mm, usually shorter than the lower glumes;

lemmas 1-2 mm, hyaline, unawned or awned, awns subterminal, to 1 mm;

paleas 0.5-0.8 mm, about 1/2 as long as the lemmas;

anthers 0.2-0.8 mm.

1-1.5 mm long, 0.3-0.4 mm wide.

= 28, 42.

= unknown.