Flora of North America species comparison

5-40 cm, erect to geniculate;

nodes usually pubescent.

to 90 cm, erect to geniculate, not bulbous;

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 densely pubescent;

auricles absent;

blades to 19 cm long, to 8 mm wide, glabrous or with hairs on both surfaces, hairs sometimes of mixed lengths.

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

3-8.5 cm, green to somewhat purple.

straight, usually slightly divergent at maturity.

7-19 mm, ascending to slightly 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 9-19 mm long, about 0.2 mm wide, setaceous throughout, rarely flattened near the base;

lemmas 5.5-10 mm, usually glabrous, rarely pubescent, awned, awns 3.5-14 mm;

anthers 0.8-4 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;

glumes 7-19 mm, setaceous;

lower glumes sometimes flattened near the base;

lemmas rudimentary to well developed, awns to 7.5 mm, rarely absent;

anthers 0.8-4 mm.

= 14.

= 14, 28, 42.