Flora of North America species comparison

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

25-95 cm.

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, upper margins sometimes sparsely hispid-ciliate, apices hairy, hairs to 5 mm;

ligules 0.2-0.3 mm;

blades 8-22 cm long, 2-5 mm wide, flat or involute, glabrous abaxially, scabridulous adaxially, margins scabrous, sometimes sparsely hispid.

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.

5-30 cm long, 0.4-1.6 cm wide, narrow, contracted;

lower nodes with 3 or 5 branches;

primary branches 0.3-2 cm, appressed or spreading to 20° from the rachis, spikelet-bearing to near the base;

secondary branches appressed;

pedicels 0.2-2.5 mm, appressed, scabridulous.

1.8-2.5 mm, plumbeous.

2.8-3.8 mm, purplish-red.

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 lanceolate or ovate, hyaline to membranous;

lower glumes 0.9-3 mm;

upper glumes 2.9-3.8 mm, subequal to the florets;

lemmas 2.9-3.8 mm, ovate, membranous, glabrous, acute;

paleas 2.9-3.8 mm, ovate, membranous;

anthers 1.5-2 mm, yellowish to purplish.

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

1.8-2.3 mm, ellipsoid, somewhat laterally flattened, rugulose, reddish-brown.

= 36, 38.

= 60.