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.

30-100 cm tall, 0.5-2 mm thick, herbaceous, ascending or decumbent, bushy and much branched above;

internodes smooth and shiny for most of their length, scabridulous or strigulose 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.

glabrous, margins hyaline;

ligules 0.5-1.5 mm, membranous, truncate, lacerate-ciliolate;

blades 3-8 cm long, (1.5)2-4 mm wide, flat, glabrous.

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.

2-6.5 cm long, 0.2-0.8 cm wide, lobed, dense;

branches 0.3-2.5 cm, ascending, closely appressed;

axillary panicles common, partly included in or exserted from the subtending sheaths;

pedicels 0.3-2.2 mm, scabrous to strigulose.

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

2.2-3.5 mm.

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, 1.5-3.5 mm, from 3/4 as long as to longer than the lemmas, smooth or scabridulous near the apices, 1-veined;

upper glumes acuminate, acute, unawned or awned, awns to 1.2 mm;

lemmas 2.2-3.1 mm, narrowly lanceolate, shiny, stramineous or purplish, usually completely glabrous (rarely with a few appressed hairs), apices scabridulous, acuminate, unawned;

paleas 2.2-3.1 mm, narrowly lanceolate;

anthers 0.3-0.5 mm, yellow to purplish.

1-1.5 mm, fusiform, brown.

1.2-1.4 mm, fusiform, brown.

mm, apices scabridulous, acuminate;

anthers 0.4-1 mm, yellow.

= 40.

= 40.