Flora of North America species comparison

25-85 cm tall, 0.9-1.7 mm thick, ascending;

internodes glabrous for most of their length, scabrous to strigose below the nodes.

4-30 cm tall, to 2 mm thick, erect;

internodes smooth or nodulose.

scabridulous, especially basally;

ligules 0.5-1.5 mm, membranous, truncate, lacerate to ciliate;

blades 4-16 cm long, 2-4(5) mm wide, flat, scabrous abaxially, pubescent adaxially.

shorter than the internodes, smooth to nodulose;

ligules 0.4-1.5 mm, membranous, acute, erose;

blades 0.7-3 cm long, 0.2-1.2 mm wide, arcuate-spreading, tightly involute, glabrous abaxially, hirtellous adaxially.

2-15 cm long, 0.5-2.8 cm wide, contracted, dense;

primary branches 0.5-5 cm, appressed to strongly ascending;

pedicels 0.5-1.5 mm, appressed, strigose.

1-5 cm long, 0.1-0.5 cm wide, contracted, not dense, usually completely exserted;

branches 0.2-1.1 cm, appressed to ascending;

pedicels 0.1-1.2 mm, setulose.

2-4 mm.

1.4-2.5 mm.

equal to subequal, 2-4 mm, subequal to or longer than the florets, 1-veined, veins scabridulous, apices acuminate to awn-tipped;

lemmas 2-3.5 mm, lanceolate, grayish-green, hairy on the calluses and lemma bases, hairs 2-3.5 mm, apices acuminate, awned, awns 1-10 mm;

paleas 2-3.5 mm, lanceolate, bases with silky hairs between the veins, apices acuminate;

anthers 0.4-1.5 mm, yellow.

equal, 0.6-1.8 mm, 1/2 - 2/3 as long as the lemmas, glabrous, 1(2, 3)-veined, acute, unawned;

lemmas 1.4-2.5 mm, lanceolate, green or purplish, midveins and margins densely villous for most of their length, hairs 0.4-1 mm, apices acute, unawned, sometimes mucronate, mucros to 0.5 mm;

paleas 1.4-2.3 mm, lanceolate, intercostal region densely villous, apices acute;

anthers 0.9-1.4 mm, yellow, dark green, or purple.

0.9-1.1 mm, cylindrical, yellowish-brown.

1-1.4 mm, ellipsoid to fusiform, dark brown.

= 20.

= 20, 40.