Flora of North America species comparison

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

internodes glabrous, shiny below the nodes.

(3)5-20(35) cm, erect or geniculate, often 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.

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

ligules 1-3.5 mm, hyaline to membranous, rounded to acute;

blades 1-4(6) cm long, 0.6-1.6 mm wide, flat or involute, smooth or scabridulous abaxially, scabrous or pubescent 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.

1.6-6 cm long, 0.2-0.5 cm wide, spikelike, interrupted near the base, long-exserted;

primary branches 0.9-1.2 cm, closely appressed at maturity;

pedicels 1-3 mm, scabrous.

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

1.5-3.2 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.

greenish-gray, glabrous, 1-veined, rounded to subacute;

lower glumes 0.6-1.4 mm;

upper glumes 0.7-1.7 mm;

lemmas (1.5)1.8-2.5(3.2) mm, lanceolate, dark greenish, appressed-pubescent on the margins and midveins, hairs shorter than 0.3 mm, apices scabridulous, acute to acuminate, unawned, sometimes mucronate, mucros shorter than 1 mm;

paleas 1.6-2.6(3.1) mm, lanceolate, scabridulous distally;

anthers 0.5-1.2 mm, purplish.

0.8-1 mm, fusiform, brownish.

0.9-1.5 mm, fusiform, reddish-brown.

= 20, 22, 28.

= 18.