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.

30-70 cm tall, 0.7-1.5 mm thick, decumbent;

internodes dull, smooth, and glabrous for most of their length, sometimes strigose immediately 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.

shorter than the internodes, scabrous, margins whitish;

ligules 0.8-2 mm, membranous, truncate, ciliolate, irregularly toothed;

blades 4-16 cm long, 2-6 mm wide, flat, scabridulous abaxially, scabrous to strigose adaxially.

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.

terminal, 5-13 cm long, 0.5-2.2 cm wide, dense;

branches 0.5-3.2 cm, ascending, appressed or diverging up to 20° from the rachises;

pedicels to 1.5 mm, stout, strigose;

axillary panicles not present.

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

2.8-4 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.

subequal, 2.5-4 mm, nearly as long as or slightly longer than the lemmas, scabrous (especially on the veins), 1-veined, tapering from the base to the acuminate apices, usually unawned, awns, if present, to 1.2 mm;

lemmas 2.8-4 mm, narrowly lanceolate, with soft hairs on the calluses and lower portion of the lemma bodies, hairs to 1 mm, apices scabridulous, acuminate, awned, awns 0.2-2.2 mm;

paleas 2.8-4 mm, subequal to the lemmas, narrowly lanceolate, with short (less than 1.5 mm), soft hairs on the lower 1/2, apices scabridulous, acuminate;

anthers 1-1.7 mm, yellow.

0.6-0.8 mm, ovoid, brownish.

1.7-2 mm, fusiform, brown.

= 42.

= 80.