Flora of North America species comparison

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

internodes glabrous, shiny below the nodes.

25-60 cm tall, 1-2 mm thick, often decumbent, sometimes erect;

internodes mostly scabrous, retrorsely 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.

longer than the internodes, scabridulous;

ligules 0.5-2 mm, truncate to obtuse, erose or lacerate;

blades 4-12 cm long, 1-2.6 mm wide, flat to involute distally, not arcuate, scabrous abaxially, hirsute or 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.

4-12(17) cm long, 0.3-2.4 cm wide, contracted, interrupted below;

branches 0.3-3 cm, usually appressed, occasionally diverging up to 30° from the rachises;

pedicels 0.1-1.2 mm, scabrous to hirsute.

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

2.4-3.5 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.

equal, 1.5-3.5 mm, 1-veined, veins scabrous, apices acute or acuminate, usually awned, awns, if present, to 1.5 mm;

lemmas 2.4-3.4 mm, elliptic, pubescent on the lower the 1/2 of the midveins and margins, hairs to 0.6 mm, tawny, apices acuminate to acute, awned, awns 0.1-3(5) mm;

paleas 2.2-3.4 mm, elliptic, intercostal region pubescent on the lower 1/2, apices acuminate to acute;

anthers 1.8-2.4 mm, orange.

0.8-1 mm, fusiform, brownish.

1.7-2 mm, fusiform, brownish.

= 20, 22, 28.

= 60.