Flora of North America species comparison

10-60(100) cm, decumbent-ascending, bases somewhat compressed-keeled;

internodes glabrous, shiny 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 0.2-1 mm, firm, truncate, ciliate, without lateral lobes;

blades 2-7(11) cm long, 1-2.8(4) mm wide, flat, occasionally conduplicate, smooth or scabridulous abaxially, scabridulous adaxially, margins and midveins not conspicuously thickened, greenish, apices acute, not sharp.

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.

6-21 cm long, 4-16 cm wide, broadly ovoid, open;

primary branches 3-12 cm, capillary, lower branches spreading 30-90° from the rachises, never appearing fascicled;

pedicels 3-14 mm, longer than the spikelets.

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.

1.2-2.1 mm, occasionally with 2 or 3 florets.

2.2-3.5 mm.

equal, 0.6-1.7 mm, purplish, scabridulous, particularly on the veins, 1-veined, apices acute;

lemmas 1.2-2.1 mm, lanceolate to oblong-elliptic, somewhat plumbeous, glabrous, usually smooth, occasionally scabridulous near the apices, apices acute, unawned or mucronate, mucros to 0.3 mm;

paleas 1.2-2.1 mm, lanceolate, glabrous, acute;

anthers 1-1.3 mm, greenish-yellow to purplish at maturity.

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.

0.8-1 mm, fusiform, brownish.

1.2-1.4 mm, fusiform, brown.

= 20, 22, 28.

= 40.