Flora of North America species comparison

10-38 cm, erect or spreading;

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

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.

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.

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.

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.

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.

1-1.2 mm, appressed to slightly divergent.

3-8 mm.

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.

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.

0.7-0.9 mm, elliptic, reddish-brown.

1-1.6 mm, fusiform, brown.

= 20.

= 20.