Flora of North America species comparison

30-100 cm.

10-100 cm, not swollen at the base.

1.5-5 cm long, 1.5-2 cm wide, ovoid to oblong-ovoid, continuous, not lobed, truncate at the base;

branches not evident, spikelets borne singly, not clustered.

1-8 cm long, 1-2 cm wide, dense, ovoid-lanceoloid, truncate to rounded at the base, rounded apically.

homogamous, with 3 florets, terminal floret bisexual;

disarticulation above the glumes, beneath the sterile florets.

borne singly, not clustered.;

spikelets homogamous, with 2 florets, 1 bisexual;

disarticulation above the glumes, beneath the sterile florets.

7-10 mm long, 2-2.5 mm wide, smooth, mostly glabrous, sometimes sparsely pilose between the veins, keels winged, wings to 0.6 mm, widening distally, lateral veins inconspicuous, smooth, apices rounded to acute, sometimes mucronate;

sterile florets 2, equal or subequal, 2-4.5 mm, 1/3 or more the length of the bisexual florets, lanceolate, sparsely hairy, acute;

bisexual florets 4.5-6.8 mm, ovate, densely hairy, shiny, stramineous to gray-brown;

anthers 2-4 mm.

3.5-6.5 mm long, 1.2-2 mm wide, keels winged distally, wings 0.3-0.5 mm wide, irregularly dentate or crenate, occasionally entire, varying within a panicle, lateral veins conspicuous, smooth;

sterile florets 1, 0.7-1.8 mm, linear, glabrous or almost so;

bisexual florets 2-4 mm long, 1-1.8 mm wide, hairy, dull yellow when immature, becoming shiny gray-brown at maturity, acute to somewhat acuminate;

anthers 1-2 mm.

3-6 mm, rounded to obtuse, lacerate;

blades 3-25 cm long, 2-10 mm wide.

5-12 mm, truncate to rounded, often lacerate;

blades 3-15 cm long, 2-10 mm wide, smooth, shiny.

= 12.

= 28, 29.