Flora of North America species comparison

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

internodes glabrous, shiny below the nodes.

10-35 cm, erect;

internodes strigulose.

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, strigulose;

ligules 0.9-2.5 mm, hyaline, acute to obtuse, irregularly toothed to lacerate;

blades 1-6(8) cm long, 0.8-2 mm wide, flat or involute, scabrous and sparsely strigulose on both surfaces.

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.

9-21 cm long, 2-7 cm wide;

primary branches 12-60 mm, occasionally capillary, narrowly ascending or diverging up to 70° from the rachises;

pedicels 2-7 mm, usually longer than the florets, straight to somewhat curved, rarely bent as much as 90°;

disarticulation above the glumes.

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

1.3-2 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.

sparsely strigulose, particularly on the margins, 1-veined, acute to acuminate;

lower glumes 0.8-1.2 mm;

upper glumes 0.9-1.5 mm, bases slightly wider than the lower glumes;

lemmas 1.3-2 mm, lanceolate, purplish to brown, shortly appressed-pubescent on the lower 1/2 of the midveins and margins, apices acute to acuminate, awned, awns 0.1-1(2) mm;

paleas 1.3-2 mm, oblong-elliptic, minutely appressed-pubescent on the lower 1/2, apices acute;

anthers 0.4-0.5 mm, purplish.

0.8-1 mm, fusiform, brownish.

0.8-1 mm, fusiform, brownish.

= 20, 22, 28.

= 40.