Flora of North America species comparison

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

internodes glabrous, shiny below the nodes.

5-40 cm, slender, erect;

internodes mostly glabrous, scabridulous or smooth, scabridulous or strigulose 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.

shorter or longer than the internodes, smooth or scabridulous;

ligules 1-2.6 mm, hyaline, truncate to obtuse, sometimes with lateral lobes;

blades 0.5-4(10) cm long, 0.8-2 mm wide, flat or involute, scabrous abaxially, shortly 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.

5-16.2(21) cm long, 1.5-6.5 cm wide, open;

primary branches 8-42 mm, often capillary, diverging 25-80° from the rachises;

pedicels 2-7 mm, straight or curved, but rarely curved as much as 90°.

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

0.8-1.5 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.

sparsely strigulose, at least near the apices, 1-veined;

lower glumes 0.5-0.8 mm, obtuse to acute;

upper glumes 0.6-0.9 mm, broader than the lower glumes, obtuse;

lemmas 0.8-1.5 mm, lanceolate, brownish to purplish, glabrous or the midveins and margins appressed-pubescent, apices obtuse to subacute, unawned;

paleas 0.8-1.4 mm, shortly pubescent or glabrous;

anthers 0.2-0.7 mm, purplish.

0.8-1 mm, fusiform, brownish.

0.6-0.9 mm, fusiform to elliptic, brownish.

= 20, 22, 28.

= 60, 80.