Flora of North America species comparison

5-40 cm, erect to geniculate;

nodes usually pubescent.

20-80 cm, geniculate to straight, not bulbous based;

nodes glabrous.

with stripes of hairs;

ligules 0.3-0.8 mm;

auricles usually absent, shorter than 2 mm if present;

blades to 9 cm long, to 4 mm wide, both surfaces sparsely to densely hairy, hairs spreading.

glabrous or pubescent;

ligules to 0.8 mm;

auricles absent;

blades to 15 cm long, to 5 mm wide, scabrous, sometimes hairy.

2.5-6.2 cm long, 4-6 mm wide, often partially enclosed at maturity, pale green.

3-15 cm, usually nodding, whitish green to light purplish.

straight, usually slightly divergent at maturity.

15-85 mm long, conspicuous, bent, divergent to strongly divergent at maturity.

spikelets: glumes to 17 mm long, to 0.8 mm wide basally, distinctly flattened near the base;

lemmas 4.5-7.5 mm, usually sparsely pubescent towards the base, glabrous distally, awned, awns 5.6-9.8 mm, often slightly divergent at maturity;

anthers 0.6-1.2 mm.

spikelets: glumes (15)35-85 mm, setaceous throughout, strongly spreading at maturity;

lemmas 4-8.5 mm, glabrous, awned, awns 11-90 mm, straight to ascending;

paleas 5.5-8 mm;

anthers 0.6-1.2 mm.

spikelets usually sterile;

glumes to 17.5 mm, distinctly flattened near the base;

lemmas 1.7-4.4 mm, blunt to acute, usually unawned, rarely awned, awns to 1.2 mm.

spikelets staminate or sterile;

glumes 17-83 mm, setaceous;

lemmas 4-6.5 mm, awned;

awns 2-15 mm, divergent;

anthers 1-1.5 mm.

= 14.

= 28.