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.

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

internodes glabrous, mostly smooth, sometimes scabridulous 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.

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.

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.

(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.

1.7-3.1 mm, occasionally with 2 florets.

0.8-1.3 mm, appressed or divaricate.

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.

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.

0.9-1.6 mm, narrowly ellipsoid, brown.

0.5-1 mm, elliptic, brownish.

= 40.

= 20.