Flora of North America species comparison

25-95 cm tall, 0.8-1.5 mm thick, erect or ascending;

internodes smooth, shiny, and glabrous for most of their length, scabridulous immediately 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.

glabrous, margins hyaline;

ligules 0.3-1 mm, membranous, truncate, ciliolate;

blades 4-16 cm long, 2-7 mm wide, flat, glabrous, usually smooth, occasionally scabridulous.

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.

4-18 cm long, 0.2-0.8 cm wide, narrow, usually exserted;

axillary panicles usually exserted, sometimes partially included in the subtending sheath;

primary branches 0.6-4 cm, ascending to appressed;

pedicels 0.3-1.6 mm, strigose.

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

primary branches 0.5-8 cm, appressed;

pedicels 1-6 mm, hispidulous.

1.6-3 mm, erect, overlapping the next spikelet on the branch by 1/2 its length.

3-4.3 mm, yellowish-brown to purplish.

equal to subequal, 1-2.5 mm, much shorter than the florets, scabridulous (particularly over the veins), 1-veined, narrowing from above the broad, overlapping bases to the acute apices, unawned or awned, awns to 1 mm;

lemmas 1.6-2.8 mm, lanceolate, hairy on the calluses, lower 1/2 of the midveins, and margins, hairs 0.3-0.5 mm, apices acuminate, unawned or awned, awns to 1 mm;

paleas 1.6-2.9 mm, lanceolate, basal 1/2 with hairs shorter than 1.

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.

1-1.5 mm, fusiform, brown.

2-3 mm, fusiform, brownish.

mm, apices scabridulous, acuminate;

anthers 0.4-1 mm, yellow.

= 40.

= unknown.