Flora of North America species comparison

30-120 cm tall, 0.8-2.5 mm thick, erect, seldom branched above the base;

internodes dull, mostly puberulent (sometimes sparsely so), terete, rarely keeled, strigose immediately below the nodes.

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

internodes mostly scabrous, scabrous or hispidulous below the nodes.

scabridulous, slightly keeled;

ligules 0.2-0.6 mm, membranous, truncate, lacerate-ciliolate;

blades 2-15 cm long, 2-6 mm wide, flat, usually scabrous or scabridulous, occasionally smooth.

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.

1.5-12 cm long, 0.3-1.8 cm wide, lobed, dense;

primary branches 0.2-2.5 cm, appressed;

pedicels absent or to 1 mm, strigose.

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.

3-8 mm.

4-7.5 mm, borne singly.

subequal, 3-8 mm (including the awn), about 1.3-2 times longer than the lemmas, smooth or scabridulous distally, 1-veined, acuminate, awned, awns to 5 mm;

lemmas 1.9-3.1 mm, lanceolate, pubescent on the calluses, mid-veins, and margins, hairs to 1.2 mm, apices scabridulous, acuminate, unawned or awned, awns to 1 mm;

paleas 1.9-3.1 mm, lanceolate, loosely pilose between the veins, apices acuminate;

anthers 0.8-1.5 mm, yellowish.

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.

1-1.6 mm, fusiform, brown.

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

spikelets usually present in the axils of the lower leaves.

= 20.

= unknown.