Flora of North America species comparison

10–90(–135) cm.

5–40 cm, weakly scabrous distally;

bases not fibrous.

3–6 per culm;

sheaths tight, inner band hyaline, 1.8–2.5 cm, apex concave, glabrous;

ligules 0.6–2.5(–4.5) mm, rounded to ± acute;

blades plicate, 5–40 cm × 0.7–3.3(–3.8) mm, widest leaf 1–3.3(–3.8) mm wide.

blades green, equaling or exceeding culms, 0.7–1.5 mm wide, herbaceous, smooth to papillose abaxially, weakly scabrous adaxially.

0.7–7.8 cm;

spikes (2–)3–8;

lateral spikes pistillate often with few staminate flowers proximally, 3–15.5 mm, sessile, staminate portion 7-flowered, to 8.2 mm, pistillate portion 3–32-flowered, 2.5–11 mm;

basal 2 spikes 1.7–42 mm apart;

terminal spike gynecandrous, 5–24 mm, staminate portion 2–17-flowered, 2–16.5 × 0.9–2 mm, pistillate portion 4–26-flowered, 2.6–9 × 4.9–9.1 mm.

with both staminate and proximal spikes;

peduncles of staminate spikes 1.9–5.9 mm;

proximal nonbasal bracts leaflike, equaling or shorter than inflorescences.

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

cauline spikes remote, nonoverlapping, proximal 2 usually separated by more than 7 mm, with 3–10 perigynia;

staminate spikes 4–15 × 0.7–1.3 mm.

spreading to reflexed, castaneous to dark brown, 2–14-veined abaxially, 0–12-veined adaxially over achene, lanceolate to ovate, (2.65–)2.9–4.75 × 0.8–2.1 mm, (1.7–)1.8–3.2(–3.6) times as long as wide;

beak (0.85–)0.95–2 mm, (0.4–)0.45–0.86 length of body, serrulate, teeth (0–)0.15–0.5 mm.

pale green, veinless, ellipsoid, 2.2–2.6 × 0.8–1 mm, longer than wide;

beak 0.3–0.7 mm, straight, pale green, apical teeth 0.2–0.3 mm.

ovate-lanceolate to rhombic-ovate, 1.3–2.1 × 0.8–1.55 mm.

dark brown, obovoid to ellipsoid, acutely trigonous in cross section, 1.4–1.7 × 0.7–0.9 mm.

scales ovate, (1.4–)2.1–3.1 × 0.7–2.3 mm, apex acute to sometimes obtuse.

scales ovate-lanceolate to ovate, 1.3–3.8 × 0.8–1.7 mm, base clavate, apex acute.

0.8–1.6(–2) mm.

1.5–2.1 mm.

pistillate scales pale brown to pale reddish brown, ovate, 2–2.5 × 1–1.4 mm, shorter than to equaling perigynia, apex cuspidate to acuminate;

staminate scales oblong to oblanceolate, 3.1–4.6 × 0.7–1.3 mm, apex long-acuminate to obtuse.

3.

= 58.