Flora of North America species comparison

10–90(–135) cm.

30–80 cm, distally scabrous.

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.

basal and cauline, 4–8 mm wide;

proximal leaves reduced to sheaths.

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.

proximal bracts usually exceeding, occasionally shorter than, inflorescences;

spikes separate, the proximal often distant, pendent, long-pendunculate, elongate, cylindric or clavate, 10–40 × 7–9 mm;

lateral 4–6(–9) spikes pistillate;

terminal spike gynecandrous.

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.

ascending, green becoming pale yellow or brown, faintly veined, ovate, 4–5 × 2.5–3.5 mm, apex gradually beaked, smooth;

beak 0.3–0.4 mm, truncate or obscurely bidendate, smooth.

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

filling proximal 1/2 or less of perigynia.

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

scales dark brown or black to margins, ovate or lanceolate, conspicuously shorter and narrower than perigynia, midvein lighter colored than body, conspicuous, often raised, prominent, mucronate.

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

0.8–1.6(–2) mm.

= 58.

= 62.