Flora of North America species comparison

30-62 cm, erect, glabrous and shiny below the nodes.

(2)6-25 cm, usually erect, sometimes decumbent, glabrous, with elliptical, yellowish, glandular pits below the nodes.

sometimes densely pilose dorsally and on the collars, margins and apices hairy, hairs to 5 mm;

ligules 0.2-0.4 mm;

blades 5-20(33) cm long, 1-3.5 mm wide, involute to flat, both surfaces with scattered hairs, adaxial surfaces densely hairy behind the ligules, hairs to 7 mm.

with elliptical glandular pits, sparsely hairy at the throat, hairs to 2 mm;

ligules 0.2-0.5 mm, ciliate;

blades 2-12 cm long, 1-3 mm wide, flat to involute, abaxial surfaces scabridulous, bases with glandular pits.

15-25 cm long, 5-27 cm wide, ovate, open;

primary branches 0.6-15 cm, diverging up to 90° from the rachises, capillary, naked basally;

pulvini hairy, hairs to 8 mm;

pedicels 1.4-10(16) mm, divergent.

terminal, 4-10(15) cm long, 0.5-2 cm wide, narrowly elliptic, contracted, dense;

primary branches alternate, usually appressed, occasionally diverging to 30° from the rachises, rachises and branches with glandular pits;

pulvini glabrous;

pedicels 1.4-10 mm, appressed or divergent.

(2.5)3-5 mm long, 1.1-1.6 mm wide, narrowly lanceolate to linear-oblong, plumbeous, with 4-9 florets;

disarticulation acropetal, paleas persistent.

3.6-7.5 mm long, 1.2-2 mm wide, narrowly ovate, light yellowish, occasionally mottled with reddish-purple, with 6-11(14) florets;

disarticulation acropetal, paleas persistent.

broadly ovate to narrowly lanceolate, hyaline to membranous;

lower glumes 1.1-1.6 mm;

upper glumes 1.2—1.8 mm;

lemmas 1.2-1.8 mm, broadly ovate, membranous throughout, lateral veins inconspicuous, apices acute;

paleas 1.1-1.7 mm, membranous to hyaline, narrower than the lemmas, apices obtuse;

anthers 3, 0.3—0.5 mm, reddish-purple.

subequal, ovate to lanceolate, hyaline;

lower glumes (0.7)0.9-1.4 mm;

upper glumes 1.2-1.8 mm;

lemmas 1.5-2.2 mm, ovate, subhyaline, stramineous, veins greenish and conspicuous, apices acute;

paleas 1.2-2 mm, hyaline, keels scabridulous, apices obtuse;

anthers 3, 0.2-0.3 mm, purplish.

0.5-0.8 mm, obovoid to somewhat prism-shaped, laterally compressed, with a well-developed adaxial groove, finely striate, opaque to translucent, reddish-brown.

0.5-0.8 mm, pyriform except slightly flattened adaxially, smooth, light brown.

= 60, 80.

= unknown.