Flora of North America species comparison

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

internodes glabrous, shiny below the nodes.

(3)5-25 cm, erect, branching, but not rooting, basally;

internodes glabrous, mostly smooth, sometimes scabridulous 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, glabrous, smooth or scabridulous;

ligules 0.2-0.5 mm, hyaline, truncate, ciliate, without lateral lobes;

blades 0.5-3 cm long, 0.8-1.2 mm wide, involute or flat, glabrous abaxially, puberulent 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)2-9 cm long, 0.6-2.7 cm wide, open, ovoid or deltoid, spikelets sparse;

primary branches (0.5)1-3.2 cm long, about 0.1 mm thick, ascending, spreading 20-100° from the rachises;

pedicels 1-3 mm long, 0.5-1.5 mm thick, stiff.

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

0.8-1.3 mm, appressed or divaricate.

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, 0.4-0.7 mm, glabrous, 1-veined, obtuse or subacute, unawned;

lemmas 0.8-1.3 mm, oval, plump, mottled with greenish-black and greenish-white or ochroleucous patches, glabrous or shortly appressed-pubescent on the margins and midveins, apices acute, unawned;

paleas 0.7-1.3 mm, oval;

anthers 0.2-0.3 mm, purplish.

0.8-1 mm, fusiform, brownish.

0.5-1 mm, elliptic, brownish.

= 20, 22, 28.

= 20.