Flora of North America species comparison

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

internodes glabrous, shiny below the nodes.

7-30 cm tall, 0.5-1 mm thick, erect to decumbent;

internodes mostly smooth to slightly nodulose, minutely pubescent or glabrous 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.

shorter or longer than the internodes, glabrous;

ligules 0.2-0.8 mm, membranous, truncate;

blades 0.5-4.7 cm long, 0.2-1.8 mm wide, usually involute, sometimes flat, often at right angles to the culm, glabrous abaxially, hirtellous adaxially.

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.

1-5 cm long, 0.1-0.4 cm wide, contracted, usually partially included in the upper sheaths, rachises usually visible between the branches;

primary branches 0.2-1.2 cm, usually closely appressed at maturity, rarely diverging up to 30° from the rachises;

pedicels 0.1-1.1 mm, glabrous.

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

1.4-2.4 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, 0.5-1.4 mm, 1/3 – 1/2 as long as the lemmas, yellowish to light green, glabrous, 1(2-3)-veined, acute, unawned;

lemmas 1.3-2.4 mm, lanceolate, green or purplish, glabrous or the calluses and margins appressed-pubescent, hairs shorter than 0.3 mm, apices acute, unawned;

paleas 1-2 mm, lanceolate, glabrous, acute;

anthers 0.7-1.4 mm, yellow to purplish.

0.8-1 mm, fusiform, brownish.

0.7-1.2 mm, ellipsoid to ovoid, brown.

= 20, 22, 28.

= 20.