Flora of North America species comparison

10-40(50) cm, decumbent, usually all the nodes concealed by the sheaths;

internodes mostly scabrous or smooth, hispidulous 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.

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.

strongly basally concentrated, most blades not reaching more than 1/5 of the plant height;

sheaths shorter than the internodes, rounded, not keeled, scabridulous or smooth, not becoming spirally coiled when old;

ligules 2-5(7) mm, hyaline, acuminate, lacerate, often with lateral lobes;

blades 1-3(5) cm long, 0.3-0.9 mm wide, tightly involute or folded, arcuate, scabridulous, midveins and margins not thickened, green, apices somewhat sharp-pointed.

7-21 cm long, 3-15 cm wide, diffuse;

primary branches 1-8 cm, diverging 30-90° from the rachises, stiff, naked basally;

pedicels 1-8 mm, sometimes appressed to the branches.

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.

2-3.5 mm.

2.8-4 mm.

equal, 1.3-2.5 mm, scabridulous, 1-veined, apices acute to acuminate, minutely erose, unawned or awned, awns to 1.1 mm;

lemmas 2-3.2(3.5) mm, narrowly elliptic to lanceolate, appressed-pubescent on the basal 1/2 - 3/4 of the margins and midveins, apices scabrous, acuminate, awned, awns 0.5-4 mm;

paleas 2-3.2(3.5) mm, narrowly elliptic, intercostal region sparsely pubescent, apices acuminate;

anthers 1.2-2.1 mm, greenish.

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.

1.7-2 mm, fusiform, brownish.

1.7-2 mm, fusiform, brown.

= 20, 21.

= 80.