Flora of North America species comparison

21–47 cm, smooth to weakly scabrous distally;

bases not fibrous.

often nodding, 20–90 cm, vegetative culms inconspicuous with few leaves clustered at apex.

blades pale green, shorter than culms, 1–3.3 mm wide, herbaceous, papillose abaxially, scabrous adaxially.

sheaths abaxially hyaline, adaxially whitish mottled, summits U-shaped, shortly prolonged less than 2.8 mm beyond collar, smooth or sometimes papillose (at 30X);

distal ligules 1–2 mm;

blades 3–5 per fertile culm, 15–35 cm × 1.3–2.5(–3) mm.

with both staminate and pistillate spikes;

peduncles of staminate spikes 0.4–2.2 mm;

proximal cauline bracts leaflike usually shorter than inflorescences.

often flexible and nodding, open, with elongate spikes, brown, (2–)2.5–5 cm × 7–10 mm;

proximal internode (4–)7–17(–20) mm; 2d internode (3–)6–10 mm;

proximal bracts scalelike or to 1(–4) cm;

rachis usually thin and wiry.

proximal pistillate spikes 2–3 (basal spikes 0);

cauline spikes with proximal 2 spikes overlapping, se!parated by less than 7 mm, with 3–10 perigynia; staminate spikes 5.3–8.6 × 0.8–1.7 mm.

3–8, distant or loosely aggregated, ovoid to globose, 4–10 × 3.5–6 mm, base tapered or clavate, apex rounded.

light green, veinless, ellipsoid, 3.2–4.2 × 1.1–1.3 mm, longer than wide;

beak straight, pale green, 0.7–1 mm, ciliate-serrulate, apical teeth 0.2–0.4 mm.

erect to ascending, brown, conspicuously 5–7-veined abaxially, veinless or faintly 3–7-veined adaxially, ovate to broadly ovate, plano-convex, 2.8–4(–4.5) × 1.4–1.9(–2) mm, 0.4–0.5 mm thick, 2–2.3 times as long as wide, margin flat, including wing 0.1–0.5 mm wide, ciliate-serrulate at least distally;

beak spreading, appressed or ascending;

straw colored to reddish brown at tip, flat, ± ciliate-serrulate, abaxial suture inconspicuous, distance from beak tip to achene 1.3–2.7 mm.

brown, obovoid to ellipsoid, obtusely trigonous in cross section, 1.9–2.4 × 1–1.3 mm.

ovate, 1.3–1.7 × 0.85–1.1 mm, 0.5 mm thick.

pistillate scales reddish brown to pale brown, with broad white margins, ovate, 2.2–3.2 × 1.2–1.8 mm, 1/2 to 2/3 length of perigynia, apex acute to acuminate,; staminate scales elliptic, 2.4–3.2 × 0.9–1.8 mm, apex acute.

1.4–1.5 mm.

3.

scales white-hyaline or pale brown with green to brown midstripe not reaching scale tip, proximal scales ovate, 2.3–3.3 mm, shorter by 0–1.6 mm and narrower than perigynia, apex obtuse on proximal scales, acute on distal.

= 36.

= 52, 54, 56.