Flora of North America species comparison

10–90(–135) cm.

erect, 20–75 cm.

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.

4–10;

basal sheaths reddish to brownish;

sheath of the distal leaf 2–10 cm;

ligules rounded to triangular, 2–7 mm;

blades 10–40 cm × 2–6 mm.

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.

10–42 cm;

peduncles of proximal spikes 0.5–10.5 cm, basal 2 peduncles 2–10 cm apart; of terminal spike (3–)6–18 cm, exceeding the distal pistillate spike by 2–12 cm;

bracts leafy, sheaths 0.5–5 cm;

blades 10–30 cm × 2–4 mm.

proximal pistillate spikes 1–3(–4), separate, 10–30-flowered, ovoid, 1.5–4.5 cm × 1.5–3 cm;

terminal staminate spike 1, 0.5–7 cm × 2–3 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.

narrowly ovoid, 10–14 × 3.5–6 mm, shiny, glabrous;

beak conic, 4.5–7 mm.

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

broadly stipitate, rhomboid, flat faces, angles thickened, 2.5–3.5 × 1.7–2 mm;

style same texture as achene.

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

scales 3–7-veined, lanceolate-ovate, 4.5–6.5 × 1.5–2 mm.

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

0.8–1.6(–2) mm.

3, 3–4.5 mm.

= 58.