Flora of North America species comparison

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

internodes glabrous, shiny below the nodes.

15-60 cm tall, 1.5-2.5 mm thick, compressed, erect, not rooting at the lower nodes;

internodes mostly hispidulous or glabrous, strigose to hispidulous below the nodes.

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.

usually shorter than the internodes, smooth or scabridulous, compressed-keeled, not becoming spirally coiled when old;

ligules 1-3(5) mm, membranous, truncate;

blades 1.4-12 cm long, 1-3 mm wide, flat to folded, smooth or scabridulous abaxially, strigose 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.

5-16 cm long, 0.2-1.2 cm wide, spikelike, dense;

primary branches 0.3-2 cm, appressed;

pedicels 0.1-1.4 mm.

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

2-3 mm, dark green or plumbeous.

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.

equal, 0.5-1.6 mm, usually 1/2 - 3/4 as long as the lemmas, 1-veined, scabridulous on the veins, acute or obtuse, abruptly narrowed to a short (0.5-1 mm) awn;

lemmas 2-3 mm, lanceolate, appressed-pubescent on the basal 1/2 - 3/4 of the midveins and margins, hairs about 0.5 mm, apices scabridulous, acute to acuminate, mucronate, mucros 0.3-1 mm;

paleas 1.9-3 mm, lanceolate, intercostal region pubescent, apices acute to acuminate;

anthers 1.3-1.8 mm, greenish.

0.8-1 mm, fusiform, brownish.

1.2-2 mm, fusiform, brownish.

= 20, 22, 28.

= unknown.