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.

3-27 cm, erect, glabrous.

usually longer than the internodes, smooth or scabridulous;

ligules 1.5-3 mm, membra nous, acute;

blades 1-5 cm long, 0.6-1.5 mm wide, flat to involute, smooth or scabridulous abaxially, sometimes shortly pubescent 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.

2-8 cm long, 0.3-3.4 cm wide, contracted or open;

primary branches 1-5 cm, diverging up to 80° from the rachises;

pedicels 0.4-5 mm, smooth or scabrous.

2-3.5 mm.

1.4-4.2 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.

smooth or scabridulous;

lower glumes 0.8-2.8 mm, narrow to broadly lanceolate, 1-veined, acute, often awn-tipped;

upper glumes 0.9-3 mm, wider than the lower glumes, lanceolate, (1)2-3-veined, truncate to acute, 2- or 3-toothed;

lemmas 1.4-4.2 mm, widest near the base, purplish mottled with dark green, hairy on the calluses and lower M of the lemma bodies, hairs to 0.5 mm, apices acuminate, usually bifid and awned from between the teeth, teeth to 0.5 mm, awns 3-10 mm, flexuous, purplish;

paleas 1.3-3.8 mm, narrowly lanceolate, acuminate to subacute;

anthers 0.5-1 mm, purplish to yellowish.

1.7-2 mm, fusiform, brownish.

1-1.6 mm, fusiform, brownish.

= 20, 21.

= 30.