Flora of North America species comparison

5-30 cm tall, 0.4-1 mm thick, decumbent, geniculate, or erect;

internodes usually nodulose (occasionally smooth) for most of their length, puberulent or nodulose below the nodes.

5-40 cm, slender, erect;

internodes mostly glabrous, scabridulous or smooth, scabridulous or strigulose below the nodes.

shorter or longer than the internodes, glabrous;

ligules 0.8-3 mm, membranous, acute to truncate, erose;

blades 0.4-6.5 cm long, 0.5-4.2 mm wide, flat or involute, straight or arcuate-spreading, glabrous abaxially, hirtellous adaxially.

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.

1-15 cm long, 0.1-1.7 cm wide, exserted, narrow or spikelike, rachises usually concealed by the branches;

primary branches 0.4-5 cm, usually closely appressed at maturity, rarely diverging up to 20° from the rachises;

pedicels 0.2-2 mm, setulose.

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°.

1.7-3.1 mm, occasionally with 2 florets.

0.8-1.5 mm.

subequal, 0.6-2 mm, 1/3– 1/2 as long as the lemmas, green, 1(2)-veined, acute, sometimes mucronate, mucros less than 0.2 mm;

lemmas 1.7-2.6(3.1) mm, lanceolate, dark greenish, plumbeous, or mottled, glabrous, apices scabridulous, acute to acuminate, sometimes mucronate, mucros to 0.5 mm;

paleas 1.2-2.4(2.9) mm, lanceolate, acute;

anthers 0.9-1.6 mm, yellow to purplish.

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.

0.9-1.6 mm, narrowly ellipsoid, brown.

0.6-0.9 mm, fusiform to elliptic, brownish.

= 40.

= 60, 80.