Flora of North America species comparison

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

internodes mostly scabrous, scabrous or hispidulous below the nodes.

10-35 cm, erect;

internodes strigulose.

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.

shorter or longer than the internodes, strigulose;

ligules 0.9-2.5 mm, hyaline, acute to obtuse, irregularly toothed to lacerate;

blades 1-6(8) cm long, 0.8-2 mm wide, flat or involute, scabrous and sparsely strigulose on both surfaces.

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.

9-21 cm long, 2-7 cm wide;

primary branches 12-60 mm, occasionally capillary, narrowly ascending or diverging up to 70° from the rachises;

pedicels 2-7 mm, usually longer than the florets, straight to somewhat curved, rarely bent as much as 90°;

disarticulation above the glumes.

4-7.5 mm, borne singly.

1.3-2 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.

sparsely strigulose, particularly on the margins, 1-veined, acute to acuminate;

lower glumes 0.8-1.2 mm;

upper glumes 0.9-1.5 mm, bases slightly wider than the lower glumes;

lemmas 1.3-2 mm, lanceolate, purplish to brown, shortly appressed-pubescent on the lower 1/2 of the midveins and margins, apices acute to acuminate, awned, awns 0.1-1(2) mm;

paleas 1.3-2 mm, oblong-elliptic, minutely appressed-pubescent on the lower 1/2, apices acute;

anthers 0.4-0.5 mm, purplish.

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

0.8-1 mm, fusiform, brownish.

spikelets usually present in the axils of the lower leaves.

= unknown.

= 40.