Flora of North America species comparison

10-80 cm, often geniculate at the base, much branched near the base;

internodes mostly scabridulous or smooth, always scabridulous below the nodes.

50-100 cm tall, 2-4 mm thick, erect, rounded near the base, not conspicuously branched, not rooting at the lower nodes;

internodes mostly glabrous, sometimes puberulent below the nodes.

often shorter than the internodes, glabrous, smooth or scabridulous;

ligules 1-2 mm, membranous to hyaline, truncate to obtuse;

blades 3-8.5(10) cm long, 1-2.5 mm wide, flat or loosely involute, scabrous abaxially, strigulose adaxially.

longer than the internodes, smooth or scabridulous, not becoming spirally coiled when old;

ligules 1-3 mm, firm to membranous, truncate, ciliolate;

blades 15-50 cm long, 1-3.5 mm wide, flat to involute, smooth or scabridulous abaxially, scabrous adaxially.

6.5-13.5 cm long, 1-6.5 cm wide, not dense, often purplish;

branches 1.6-4 cm, ascending or diverging up to 80° from the rachises, spikelet-bearing to the base;

pedicels 2-6 mm, appressed to divaricate, antrorsely scabrous;

disarticulation above the glumes.

15-35 cm long, 0.5-2(3) cm wide;

primary branches 0.5-8 cm, appressed;

pedicels 1-6 mm, hispidulous.

2.5-5.5 mm, borne singly.

3-4.3 mm, yellowish-brown to purplish.

0.4-1.3 mm, exceeded by the florets, 1-veined, obtuse, often minutely erose;

lower glumes 0.4-1 mm;

upper glumes 0.6-1.3 mm;

lemmas 2.5-3.8(5.3) mm, narrowly lanceolate, mostly smooth, scabridulous distally, hairy on the calluses, lower 1/2 of the margins, and midveins, hairs 0.2-0.5 mm, apices acuminate, awned, awns 10-30 mm, straight to flexuous;

paleas 2.2-4.8 mm, narrowly lanceolate, acuminate;

anthers 0.3-1.2 mm, purplish.

subequal, (1.7)2-3.1 mm, about 3/4 as long as the florets, scabridulous distally, 1-veined, apices acute to acuminate, awned, awns to 1.5 mm;

lemmas 3-4.3 mm, lanceolate, calluses hairy, hairs to 1.5 mm, lemma bodies scabridulous, apices acuminate, awned, awns 3-10 mm, straight;

paleas 2.9^1.2 mm, lanceolate, scabridulous, acute to acuminate;

anthers 1.5-2.5 mm, yellow to purple-tinged.

1.7-2.5 mm, fusiform, reddish-brown.

2-3 mm, fusiform, brownish.

panicles with 1-3 spikelets present in the axils of the lower leaves.

= 20, 40, 60.

= unknown.