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.

40-110 cm tall, 1-2 mm thick, erect;

internodes puberulent for most of their length, strigose 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.

glabrous and smooth for most of their length, scabridulous distally, margins hyaline;

ligules 1-2.5 mm, membranous, truncate, lacerate-ciliolate;

blades 5-18 cm long, 3-7 mm wide, flat, scabrous to scabridulous, occasionally smooth.

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.

terminal and axillary, 6-21 cm long, 0.2-1 cm wide, narrow, not dense;

axillary panicles usually exserted at maturity;

branches 0.8-6 cm, ascending to closely appressed;

pedicels 0.8-3.5 mm, strigose.

1.7-3.1 mm, occasionally with 2 florets.

2.2-3.7 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.

subequal, 1.8-3 mm, nearly as long as the lemmas, 1-veined, tapering from near the base, apices scabridulous, acuminate, unawned or awned, awns to 1 mm;

lemmas 2.2-3.7 mm, lanceolate to narrowly lanceolate, hairy on the calluses, lower 1/2 of the midveins, and margins, hairs 0.2-0.5 mm, apices scabridulous, acuminate, awned, awns 5-18 mm, purplish;

paleas 2-3.5 mm, lanceolate, proximal 1/2 shortly pilose, apices scabridulous, acuminate;

anthers 0.4-0.8 mm, yellow.

0.9-1.6 mm, narrowly ellipsoid, brown.

1.4-2 mm, fusiform, brown.

= 40.

= 40.