Flora of North America species comparison

10-55 cm, erect;

nodes glabrous.

2.2-7 cm long, 4-8 mm wide, often partially enclosed at maturity, pale green or with a reddish tinge to the glumes and awns.

straight, ascending to slightly divergent at maturity.

sheaths pubescent;

ligules 0.3-0.8 mm;

auricles absent;

blades to 7.5(13.5) cm long, to 4.5 mm wide, sparsely to densely pubescent on both sides.

spikelets: glumes 5.5-20.5 mm long, to 0.5 mm wide, setaceous to slightly flattened near the base;

lemmas 5-9 mm, glabrous, awned, awns 3-12 mm;

anthers 0.5-1.5 mm.

spikelets sterile or staminate, occasionally bisexual;

glumes 5-20 mm;

lower glumes slightly flattened near the base;

upper glumes setaceous throughout;

lemmas 1.8-8.5 mm, unawned or awned, awns to 1 mm.

= 28.