Flora of North America species comparison

30-100(120) cm tall, 1-3 mm thick near the base, erect to decumbent.

10-50(60) cm tall, 0.7-1.2 mm thick.

rounded below, smooth or scabridulous, margins sometimes ciliate distally, apices with tufts of hairs, hairs to 4 mm;

ligules 0.5-1 mm;

blades (2)5-24 cm long, 2-4(6) mm wide, ascending or strongly divergent, flat to involute, glabrous abaxially, scabridulous adaxially, margins scabridulous.

rounded below, occasionally glabrous, usually villous to tomentose along the margins and back, with soft, kinky hairs to 4 mm;

ligules 0.2-0.4 mm;

blades (0.6)1.5-6(7) cm long, 1-1.5 mm wide, involute, stiff, spreading at right angles to the culm, glabrous abaxially, scabridulous adaxially, margins smooth.

10-30 cm long, 4-12 cm wide, longer than wide, open, subovate to oblong;

rachises drooping or nodding;

lower nodes with 1-2 branches;

primary branches 1-8(12) cm, flexible, diverging at least 70° from the rachis, often strongly reflexed to 130°, tangled with each other and with branches from adjacent panicles;

lower branches no longer than those in the middle, usually included in the uppermost sheath;

secondary branches widely spreading, without spikelets on the lower 1/8 – 1/2;

pulvini pubescent;

pedicels 0.3-3 mm, spreading, scabridulous.

3-10 cm long, (0.3)1-5(6) cm wide, longer than wide, ultimately open, subovate, lower portion often included in the uppermost sheath;

lower nodes with 1-2 branches;

primary branches 0.5-5 cm, appressed or spreading to 90° from the rachis;

secondary branches appressed or spreading, without spikelets on the lower 1/8 – 1/4;

pedicels 0.2-2 mm, appressed or spreading.

1.8-2.5 mm, plumbeous.

1.4-2.1 mm, purplish.

unequal, ovate, membranous;

lower glumes 0.9-1.5 mm;

upper glumes 1.4-2.5 mm, subequal to the florets;

lemmas 1.4-2.5 mm, lanceolate to ovate, membranous, glabrous, acute;

paleas 1.4-2.4 mm, ovate, membranous;

anthers 0.4-0.7 mm, yellow.

unequal, linear-lanceolate to ovate, membranous;

lower glumes 0.5-1.1 mm;

upper glumes 1.3-2 mm, from slightly shorter than to subequal to the florets;

lemmas 1.4-2.1 mm, ovate, membranous, glabrous, acute;

paleas 1.4-2.1 mm, ovate, membranous;

anthers 0.7-1 mm, purplish.

0.6-1 mm, ellipsoid, light brownish to reddish-orange.

0.7-1 mm, orangish to whitish.

= 36, 38.

= 40.