Flora of North America species comparison

7-35(60) cm, erect or decumbent.

70-120 cm.

rounded below, margins and apices hairy, hairs to 3 mm;

ligules 0.3-1 mm;

blades 2-12(20) cm long, 2-6 mm wide, flat, abaxial surface glabrous, adaxial surface scabridulous, sometimes sparsely hispid, margins ciliate-pectinate.

shiny and indurate basally, glabrous or appressed hairy elsewhere, hairs to 4 mm;

ligules 0.2-0.8 mm;

blades 15-52 cm long, 1-2.5 mm wide, flat, folded or involute, bluish-green, remaining so well into winter, glabrous on both surfaces, margins scabridulous.

4-15(18) cm long, 0.3-6 cm wide, open (contracted when immature), pyramidal;

lower nodes with 7-12(15) branches;

primary branches 0.5-4.5 cm, spreading 30-90° from the rachis, with elongated glands, without spikelets on the lower 1/3 – 1/2, secondary branches appressed;

pedicels 0.1-0.5 mm, appressed.

21-50 cm long, 5-12(15) cm wide, longer than wide, open, not diffuse, pyramidal to ovate, with few spikelets;

lower nodes with 1-2(3) branches;

primary branches 6-20 cm, ascending, spreading 20-50° from the rachis, not capillary, without spikelets on the lower 1/4–1/2;

secondary branches appressed to loosely spreading;

pulvini glabrous;

pedicels 3-8(14) mm, longer or shorter than the spikelets, appressed, glabrous, scabrous.

1.2-1.8 mm, plumbeous or brownish, often secund along the branch.

4.5-7(7.2) mm, purplish.

unequal, ovate to obovate, membranous;

lower glumes 0.3-0.7 mm, without midveins;

upper glumes 1.2-1.8 mm, at least 2/3 as long as the florets, often longer;

lemmas 1.2-1.7 mm, ovate to elliptic, membranous, glabrous, acute;

paleas 1.1-1.6 mm, ovate to elliptic, membranous, glabrous;

anthers 0.2-0.4 mm, yellowish or purplish.

subequal to unequal, linear-lanceolate to lanceolate, membranous;

lower glumes 3-4.6 mm, 0.6-0.9 times as long as the upper glumes;

upper glumes 4-7.2 mm, from slightly shorter to longer than the spikelets;

lemmas 4.4-6.5 mm, lanceolate, membranous, glabrous, acuminate to acute;

paleas 4.5-6.7 mm, lanceolate, membranous, glabrous;

anthers 3, 3.5-5 mm, purplish.

0.6-1 mm, obovoid, faintly striate, light brownish.

1.8-2.2 mm, obovoid, laterally flattened, light brownish.

= 24, 36, 54.

= unknown.