Flora of North America species comparison

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

28-60 cm, erect to decumbent, glabrous 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.

glabrous, apices sparsely hairy, hairs to 2 mm;

ligules 0.3-0.4 mm;

blades 5-20 cm long, 0.8-3 mm wide, flat to involute, abaxial surfaces glabrous, adaxial surfaces scabridulous, occasionally hairy near the base.

(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.

terminal, (5)8-20(22) cm long, 1-3.5 cm wide, spicate to narrowly ovate, branches condensed into glomerate lobes;

primary branches 0.8-3 cm, appressed or diverging up to 90° from the rachises, spikelet-bearing to the base;

pulvini glabrous;

pedicels 0.2-1.3 mm, flattened, mostly appressed, all shorter than the spikelets.

(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.

3-7 mm long, 1.8-2.4 mm wide, linear-lanceolate, stramineous with a reddish-purple tinge, with 8-18 florets;

disarticulation acropetal, glumes first, then the lemmas, 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.

subequal, 1.2-2 mm, narrowly lanceolate to lanceolate, membranous;

lemmas 1.5-2.2 mm, lanceolate to ovate, leathery, greenish, lateral veins conspicuous, apices acute;

paleas 1.1-1.7 mm, hyaline, narrower than the lemmas, keels ciliate, cilia to 0.2 mm, apices obtuse to acute;

anthers 2, 0.2-0.3 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.

0.4-0.5 mm, ovoid, not grooved, smooth, light brown.

= 60.

= unknown.