Flora of North America species comparison

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

20–60 cm, scabrous distally;

bases (remnants of old leaves) slightly or not 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 green, 1.8–5 mm wide, widest leaves 3+ mm wide, herbaceous, papillose 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.

usually with both staminate and pistillate spikes, rarely only pistillate;

peduncle of staminate spike 0.7–9.7 mm;

proximal nonbasal bracts leaflike, usually shorter than inflorescences.

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

cauline spikes usually clearly separated, with 3–10 perigynia; staminate spikes 3.1–15.5 × 1–2.5 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, globose to obovoid, 2.7–3.8 × 1.2–2.6 mm, as long as wide;

beak usually straight, occasionally slightly bent, pale green, 0.5–2.3 mm, weakly ciliate-serrulate, apical teeth 0.1–0.5 mm.

circular, 1 × 1 mm.

pale brown, globose to obovoid, round to obtusely trigonous in cross section, 1.4–2.3 × 1–1.4 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.

1.8–3 mm.

pistillate scales pale brown to dark reddish brown, often with broad white margins, ovate to lanceolate, 2.5–4.8 × 1.2–2 mm, shorter than to exceeding perigynia, apex obtuse to acuminate or short-awned; staminate scales elliptic to obovate, 3.1–5.2 × 0.7–2.2 mm, apex obtuse to acuminate or short-aristate.

3.

= 48.