Flora of North America species comparison

8-45(70) cm, erect or geniculate, glabrous, occasionally with a few glandular depressions.

25-60 cm, erect, glabrous and shiny.

mostly glabrous, occasionally glandular, apices hirsute, hairs to 3 mm;

ligules 0.1-0.3 mm, ciliate;

blades 2-15(20) cm long, 1-2.5(4) mm wide, flat, abaxial surfaces glabrous, occasionally with glandular pits along the midrib, adaxial surfaces scabridulous.

mostly glabrous, apices hairy, hairs to 5 mm;

ligules 0.2-0.4 mm, ciliate;

blades 10-30 cm long, 2-5.5 mm wide, flat to involute, glabrous abaxially, scabridulous adaxially.

4-20(28) cm long, 2-15(18) cm wide, ellipsoid to ovoid, diffuse;

primary branches 1-10 cm, diverging 10-80°(110°) from the rachises, capillary, whorled on the lowest 2 nodes, rarely glandular;

pulvini glabrous or hairy;

pedicels 1-10 mm, flexible, appressed or divergent.

10-45 cm long, 2.5-22 cm wide, ovate, open to contracted;

primary branches 4-17 cm, appressed or diverging up to 50° from the rachises, flexible, naked below;

pulvini glabrous or hairy, hairs to 5 mm;

pedicels 2.5-17 mm, appressed or divergent.

(2)3.5-6(10) mm long, 0.6-1.4 mm wide, linear-oblong to narrowly ovate, plumbeous, with (3)5-17 florets;

disarticulation acropetal, paleas tardily deciduous, rachillas persisting longer than the paleas.

4-11 mm long, 1.3-2.5 mm wide, linear-lanceolate to ovate, stramineous, grayish-green to purplish, with 4-16 florets;

disarticulation tardy, acropetal, caryopses falling before the glumes and lemmas, paleas persistent.

narrowly ovate to lanceolate, hyaline;

lower glumes 0.3-0.6(0.8) mm;

upper glumes 0.7-1.2(1.4) mm;

lemmas 1.2-1.8(2) mm, ovate-lanceolate, membranous to hyaline, grayish-green proximally, reddish-purple distally, lateral veins inconspicuous, apices acute;

paleas 1-1.6 mm, membranous to hyaline, keels scabridulous to scabrous, apices obtuse;

anthers 3, 0.2-0.3 mm, purplish.

lanceolate, membranous to hyaline;

lower glumes 1-2 mm;

upper glumes 1.5-2.8 mm;

lemmas 1.6-3 mm, lanceolate, membranous, apices acute;

paleas 1.4-2.2 mm, hyaline, keels scabridulous, apices obtuse;

anthers 3, 0.2-0.5 mm, purplish.

0.5-1 mm, obovoid to prism-shaped, adaxial surfaces flat, smooth to faintly striate, light brown.

0.7-1.3 mm, obovoid, not grooved, smooth, light brown to whitish.

= 40.

= 40.