Flora of North America species comparison

5-42 cm tall, 0.5-1 mm thick, decumbent near the base, forming dense mats;

internodes glabrous, slightly nodulose.

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

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

shorter or longer than the internodes, glabrous;

ligules 0.1-1(1.8) mm, membranous, truncate, occasionally lacerate;

blades 0.4-6 cm long, 0.5-1.4 mm wide, involute, glabrous, smooth or scabridulous adaxially.

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.

1-9 cm long, 0.1-0.6 cm wide, contracted, not dense, usually partially included in the upper leaf sheaths;

primary branches 0.2-3 cm, usually closely appressed at maturity, rarely diverging up to 40° from the rachises;

pedicels 0.2-3.6 mm, setulose.

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.

2.6-4.2 mm, occasionally with 2 florets.

2-4 mm.

subequal, 1.1-3.6 mm, from 1/2 as long as to equaling the lemmas, light green, 1(2-3)-veined, acute, unawned;

lemmas 2.6-3.2(4.2) mm, lanceolate, dark greenish or mottled, glabrous or the calluses and margins appressed-pubescent, hairs to 0.3 mm, apices scabridulous, attenuate, usually mucronate, mucros 0.1-0.3 mm;

paleas 2.1-3.3 mm, lanceolate, smooth or scabridulous, acute;

anthers 0.7-1.4 mm, yellow to purplish.

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.

1.1-1.5 mm, ellipsoid to ovoid, brownish.

0.9-1.1 mm, cylindrical, yellowish-brown.

= 60, 70-72.

= 20.