Flora of North America species comparison

10-130 cm, erect, sometimes geniculate, glabrous, sometimes with a ring of glandular depressions below the nodes.

35-70 cm, erect, with glandular bands below the nodes.

sometimes with glandular pits, pilose near the apices and on the collars, hairs to 4 mm, papillose-based;

ligules 0.2-0.5 mm, ciliate;

blades 5-25 cm long, 2-7(9) mm wide, flat, abaxial surfaces glabrous, adaxial surfaces scabridulous, occasionally pubescent near the base.

hairy on the margins and at the apices, hairs to 4 mm;

ligules 0.2-0.5 mm;

blades (8)10-25(30) cm long, 1.5-4 mm wide, flat to involute, abaxial surfaces glabrous, adaxial surfaces scabridulous, sometimes also sparsely hairy, hairs to 4 mm.

(5)10-40 cm long, (2)4-18 cm wide, ovate, rachises angled and channeled;

primary branches 3-12(15) cm, solitary to whorled, appressed or diverging to 80° from the rachises;

secondary branches somewhat appressed;

pulvini glabrous;

pedicels 1-6(7) mm, almost appressed to narrowly divergent, stiff.

12-30 cm long, 5-16 cm wide, ovate, open, an oblique glandular ring present below the lowest rachis node;

primary branches 2-10 cm, diverging 10-70° from the rachises, flexible;

pulvini glabrous;

pedicels 1.5-14 mm, divergent, with a glandular band.

(4)5-10(11) mm long, 0.7-2.4 mm wide, ovate to linear-lanceolate, gray-green to purplish, with 5-11(15) florets;

disarticulation acropetal.

5-16 mm long, 1.2-2.3 mm wide, linear-lanceolate, plumbeous to dark reddish-purple, with 5-25 florets;

disarticulation acropetal, paleas persistent.

subequal, 0.7-2(2.3) mm, ovate to lanceolate, membranous;

lemmas 1.2-2.4 mm, ovate, membranous, glabrous or with a few hairs, gray-green, lateral veins evident, often greenish, apices acute;

paleas 1-2.2 mm, hyaline, keels scabrous, apices obtuse to truncate;

anthers 3, 0.2-0.5 mm, purplish.

ovate, membranous to hyaline;

lower glumes 1.1-1.5 mm;

upper glumes 1.4-2 mm;

lemmas 1.5-2.5 mm, ovate, membranous, strongly keeled, keels without glands, lateral veins conspicuous, apices acute;

paleas 1.2-2.1 mm, hyaline, narrower than the lemmas, apices obtuse to truncate;

anthers 3, 0.3-0.5 mm, purplish.

0.5-0.8(1) mm, ovoid to rectangular-prismatic, laterally compressed, shallowly to deeply grooved on the adaxial surface, striate, reddish-brown, distal 2/3 opaque.

0.8-1.1 mm, rectangular-prismatic to ellipsoid, somewhat laterally compressed, with a well-developed adaxial groove, smooth, faintly striate, mostly opaque, light reddish-brown.

= 60.

= 84.