Flora of North America species comparison

10-42 cm, erect or decumbent, much branched below;

internodes mostly scabrous, scabrous or hispidulous below the nodes.

5-30(40) cm, erect, rounded near the base;

internodes smooth or scabridulous.

usually shorter than the internodes, flattened below, glabrous, scabridulous or smooth, striate;

ligules 1.5-3 mm, hyaline, acute, lacerate, with lateral lobes;

blades 1-5(7) cm long, 0.8-1.6(2) mm wide, flat or involute, scabrous abaxially, pubescent adaxially.

longer than the lower internodes, glabrous, becoming flattened and papery or ribbonlike at maturity;

ligules 2-4(5) mm, membranous, acute;

blades 2-6 cm long, 0.4-1.6 mm wide, tightly involute, filiform, stiff, scabrous abaxially, sparsely hirtellous adaxially, apices sharp.

4-23 cm long, 0.5-2 cm wide, usually partially included in the subtending sheaths at maturity;

primary branches 20-45 mm, ascending, closely appressed;

pedicels 1-5 mm, appressed, scabrous;

disarticulation above the glumes.

1.5-7 cm long, 0.4-2 cm wide, contracted, sometimes dense;

primary branches 0.1-2.8 cm, mostly tightly appressed or diverging up to 30° from the rachises;

pedicels 0.1-2 mm, scabrous.

4-7.5 mm, borne singly.

2.2-3.5 mm.

1-2 mm, 1-veined, veins conspicuous, scabrous, and greenish basally, apices obtuse to subacute, often erose;

lemmas 4-6.2(7.5) mm, narrowly lanceolate, terete, mostly smooth, scabrous distally, hairy on the calluses and lower 1/4 of the margins, hairs 0.2-0.3 mm, whitish, lemma bodies not appearing 5-veined, apices acuminate, awned, awns 10-30 mm, straight, scabrous;

paleas 3.8-5.7(7) mm, narrowly lanceolate;

anthers 0.3-1.1 mm, purplish.

subequal, 0.8-2.5 mm, scabridulous distally;

lower glumes 1-veined, awned, awns to 1.6 mm;

upper glumes usually 3-veined, apices truncate to acute, 3-toothed, teeth sometimes shortly awned, awns to 0.6 mm;

lemmas 2.2-3.5 mm, lanceolate, yellowish mottled with dark green, sparsely appressed-pubescent on the lower portion of the midveins and margins, hairs to 0.4 mm, apices scabridulous, acute to acuminate, awned, awns 1-5 mm, straight or flexuous;

paleas 2.2-3.5 mm, lanceolate, acute to acuminate;

anthers 1.5-2 mm, purplish.

1.6-3 mm, narrowly fusiform, brownish to pinkish.

1.3-1.6 mm, fusiform, brownish.

spikelets usually present in the axils of the lower leaves.

= unknown.

= unknown.