Flora of North America species comparison

20–60 cm, 2–3.5 mm wide basally, 0.5–1 mm wide distally.

10–45 cm, smooth to scabrous distally;

bases (remnants of old leaves) slightly or not at all fibrous.

sheaths tight, green, rarely white spotted, fronts hyaline, slightly thickened at mouth;

ligules to 5 mm, longer than wide;

widest leaf blades (1.9–)2.5–5 mm wide.

blades pale to bright green, shorter to longer than culms, 0.8–2.5 mm wide, herbaceous, smooth to scabrous abaxially, papillose to scabrous adaxially.

forming dense heads, with 3–8 spikes, 0.6–2 cm × 5–10 mm;

proximal bracts 1–5 cm;

spikes with 4–20 ascending to spreading perigynia.

with both staminate and pistillate spikes;

peduncles of staminate spikes 0.4–9.9 mm;

proximal nonbasal bracts leaflike, shorter than inflorescences.

proximal pistillate spikes 1–4 (basal spikes 0);

cauline spikes overlapping, proximal 2 spikes usually separated by less than 7 mm, with 4–14 perigynia; staminate spikes 5–14 × 0.5–1.8 mm.

pale green to pale yellow, veinless or to weakly 8-veined abaxially, 2.5–3.2 × 1.4–2 mm, body elliptic to circular, widest at 0.4–0.55 length of body, margins serrulate distally;

beak 0.7–1.1 mm, apical teeth 0.3–0.5 mm.

pale green, veinless, ellipsoid, 2.3–3.3 × 0.8–1.2 mm, longer than wide;

beak straight, pale green, 0.6–1.1 mm, weakly ciliate-serrulate, apical teeth 0.1–0.4 mm.

circular, 1 × 1 mm.

brown, ellipsoid, acutely trigonous in cross section, 1.2–1.7 × 0.7–1.3 mm.

scales hyaline with green midvein, ovate, 1–1.8 × 0.8–1.4 mm, body not more than 1/2 length of perigynium, apex acuminate to short-awned.

0.7–1.3 mm.

1.5–2.7 mm.

pistillate scales pale to dark reddish brown, with narrow white margins, lanceolate to ovate or obovate, 2.2–3.4 × 0.4–1.8 mm, equaling or exceeding perigynia, apex usually acuminate, sometimes acute or mucronate; staminate scales lanceolate to ovate, 2.8–6 × 0.6–1.9 mm, apex acute to acuminate.

3.

= 48.