Flora of North America species comparison

10-45 cm, erect to decumbent, sometimes with a ring of glandular tissue below the nodes.

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

sometimes glandular on the midveins, hairy at the apices, hairs

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.

4-20 cm long, 2.2-8(10) cm wide, ovate, open to contracted, rachises sometimes with glandular spots or pits below the nodes, rarely with a glandular ring, glands usually dull, greenish-gray to stramineous;

primary branches 0.5-6 cm, diverging 20-100° from the rachises;

pulvini glabrous or hairy;

pedicels 1-4 mm, stiff, straight, divergent, usually with a distal ring of crateriform glands.

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.

4-7(11) mm long, 1.1-2.2 mm wide, narrowly ovate, mostly reddish-purple to greenish, occasionally grayish, with 7-12(20) florets;

disarticulation acropetal, paleas persistent.

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.

broadly ovate, membranous;

lower glumes 0.9-1.4 mm;

upper glumes 1.2-1.6 mm;

lemmas 1.4-1.8 mm, broadly ovate, membranous, keels occasionally with 1-2 crateriform glands, apices acute to obtuse;

paleas 1.3-1.7 mm, hyaline, keels smooth or scabridulous, scabridities to 0.1 mm, apices obtuse to acute;

anthers 2, 0.2-0.3 mm, reddish-brown.

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.

0.4-0.7 mm, ellipsoid, not grooved, striate, light brown.

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.

= 40.

= 84.