Flora of North America species comparison

5-45 cm, arising from the bases of old depressed culms, compressed-keeled, developing branches below the lower leaf nodes;

internodes mostly glabrous, sometimes minutely puberulent below the nodes.

15-50 cm, erect to decumbent;

internodes hispidulous or glabrous below the nodes.

longer than the internodes, keeled, keels scabridulous, not becoming papery or spirally coiled when old;

ligules 0.5-1.5 mm, membranous, truncate to obtuse, erose, without lateral lobes;

blades 1-15 cm long, 0.8-2 mm wide, flat to conduplicate, smooth or scabridulous abaxially, hirtellous adaxially, midveins thickened and whitish proximally.

from slightly shorter to slightly longer than the internodes, rounded to somewhat flattened but not keeled, hispidulous basally, glabrous distally, margins hyaline, not becoming spirally coiled when old;

ligules 1-2 mm, hyaline, obtuse, minutely erose;

blades 4-7 cm long, 0.8-2 mm wide, flat or folded, glabrous abaxially, scabridulous or hispidulous adaxially, midveins and margins conspicuous, thickened, white, and cartilaginous.

2-20 cm long, (0.2)2.5-6 cm wide, diffuse;

primary branches 0.4-6 cm long, about 0.1 mm thick, ascending, diverging 10-60° from the rachises, naked basally;

pedicels 0.2-7 mm, glabrous.

4-20 cm long, 4-15 cm wide, diffuse;

primary branches 0.5-7.5 cm, capillary, diverging 40-90° from the rachises, naked basally;

pedicels 2-16 mm, flexuous.

1.3-2.1 mm, dark purplish to plumbeous, occasionally with 2 florets.

2.1-3.1 mm.

equal, 0.4-1.3 mm, glabrous, 1-veined, apices scabrous, acute to obtuse, sometimes erose or notched, unawned;

lemmas 1.2-2 mm, oblong-elliptic, dark purplish to plumbeous, glabrous, faintly 3-veined, apices acute to obtuse, unawned;

paleas 1.3-2.1 mm, oblong-elliptic, glabrous, acute to obtuse;

anthers 0.6-0.9 mm, dark purple.

equal, 1-1.5 mm, 1-veined, apices scabridulous, obtuse to acute, sometimes minutely erose, unawned;

lemmas 2-3.1 mm, elliptic, purplish, appressed-pubescent on the lower 3/4 of the midveins and margins, hairs to 0.6 mm, apices scabrous, acute, minutely bifid, awned, awns 0.5-1.1 mm;

paleas 2.1-3.2 mm, elliptic, glabrous, acute;

anthers 1.6-2.1 mm, purplish.

0.6-0.8 mm, ovoid, brownish.

1.3-1.7 mm, fusiform, sulcate dorsally, brownish.

= 42.

= 20.