Flora of North America species comparison

10-60(100) cm, decumbent-ascending, bases somewhat compressed-keeled;

internodes glabrous, shiny below the nodes.

(35)50-150 cm tall, to 5 mm thick near the base, stiffly erect, not rooting at the lower nodes;

internodes glabrous.

glabrous, margins hyaline;

ligules 0.2-1 mm, firm, truncate, ciliate, without lateral lobes;

blades 2-7(11) cm long, 1-2.8(4) mm wide, flat, occasionally conduplicate, smooth or scabridulous abaxially, scabridulous adaxially, margins and midveins not conspicuously thickened, greenish, apices acute, not sharp.

longer than the internodes, smooth or scabridulous, rounded dorsally, bases somewhat flat and chartaceous;

ligules 0.5-2(3) mm, firm, truncate, usually ciliolate;

blades 10-50 cm long, 1.5-6 mm wide, flat or involute, stiff, glabrous abaxially, scabrous adaxially.

6-21 cm long, 4-16 cm wide, broadly ovoid, open;

primary branches 3-12 cm, capillary, lower branches spreading 30-90° from the rachises, never appearing fascicled;

pedicels 3-14 mm, longer than the spikelets.

15-60 cm long, 0.5-1.2 cm wide, spikelike, dense, grayish-green, often interrupted below;

primary branches 0.2-4 cm, appressed;

pedicels 0.2-3 mm, hispidulous, strongly divergent.

1.2-2.1 mm, occasionally with 2 or 3 florets.

2.4-4 mm.

equal, 0.6-1.7 mm, purplish, scabridulous, particularly on the veins, 1-veined, apices acute;

lemmas 1.2-2.1 mm, lanceolate to oblong-elliptic, somewhat plumbeous, glabrous, usually smooth, occasionally scabridulous near the apices, apices acute, unawned or mucronate, mucros to 0.3 mm;

paleas 1.2-2.1 mm, lanceolate, glabrous, acute;

anthers 1-1.3 mm, greenish-yellow to purplish at maturity.

subequal, 1.8-3.2 mm, almost as long as the florets, scabrous to scabridulous, 1-veined, usually acute or obtuse, occasionally acuminate or notched, occasionally mucronate, mucros to 0.6 mm;

lemmas 2.4-4 mm, lanceolate, pubescent on the calluses, lower 1/6 of the margins, and midveins, hairs to 0.4 mm, apices scabrous, acute or obtuse, unawned, rarely mucronate, mucros to 1 mm;

paleas 2.3-3.8 mm, lanceolate, acute;

anthers 1.3-1.8 mm, yellow to purple.

0.8-1 mm, fusiform, brownish.

1.8-2.2 mm, fusiform, brownish.

= 20, 22, 28.

= 40.