Flora of North America species comparison

10-38 cm, erect or spreading;

internodes mostly glabrous, smooth or scabridulous, scabrous or strigulose below the nodes.

10-80 cm, often geniculate at the base, much branched near the base;

internodes mostly scabridulous or smooth, always scabridulous below the nodes.

often longer than the internodes, scabridulous, margins hyaline;

ligules 1-3 mm, hyaline, obtuse, irregularly toothed to lacerate, with lateral lobes;

blades 1-10 cm long, 0.4-2 mm wide, flat, scabrous abaxially, strigulose adaxially, margins and midveins thickened basally, whitish.

often shorter than the internodes, glabrous, smooth or scabridulous;

ligules 1-2 mm, membranous to hyaline, truncate to obtuse;

blades 3-8.5(10) cm long, 1-2.5 mm wide, flat or loosely involute, scabrous abaxially, strigulose adaxially.

10-24 cm long, 3.5-11 cm wide, diffuse;

primary branches 2.2-6.2 cm long, about 0.1 mm thick, diverging 80-100° from the rachises, straight;

pedicels 6-10 mm long, about 0.02 mm thick, delicate;

disarticulation above the glumes.

6.5-13.5 cm long, 1-6.5 cm wide, not dense, often purplish;

branches 1.6-4 cm, ascending or diverging up to 80° from the rachises, spikelet-bearing to the base;

pedicels 2-6 mm, appressed to divaricate, antrorsely scabrous;

disarticulation above the glumes.

1-1.2 mm, appressed to slightly divergent.

2.5-5.5 mm, borne singly.

equal to subequal, 0.5-1 mm, glabrous throughout or obscurely puberulent, hairs about 0.06 mm, 1-veined, obtuse or subacute;

lemmas 1-1.2 mm, oblong-elliptic, purplish to light brownish, not mottled, glabrous or densely appressed-puberulent on the margins and midveins, apices obtuse, unawned;

paleas 0.9-1.2 mm, oblong-elliptic;

anthers 0.3-0.5 mm, purplish.

0.4-1.3 mm, exceeded by the florets, 1-veined, obtuse, often minutely erose;

lower glumes 0.4-1 mm;

upper glumes 0.6-1.3 mm;

lemmas 2.5-3.8(5.3) mm, narrowly lanceolate, mostly smooth, scabridulous distally, hairy on the calluses, lower 1/2 of the margins, and midveins, hairs 0.2-0.5 mm, apices acuminate, awned, awns 10-30 mm, straight to flexuous;

paleas 2.2-4.8 mm, narrowly lanceolate, acuminate;

anthers 0.3-1.2 mm, purplish.

0.7-0.9 mm, elliptic, reddish-brown.

1.7-2.5 mm, fusiform, reddish-brown.

panicles with 1-3 spikelets present in the axils of the lower leaves.

= 20.

= 20, 40, 60.