Flora of North America species comparison

10–90(–135) cm.

to 80 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.

blades 3–8 mm wide.

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 3–5 spikes;

peduncles of proximal spikes exserted more than 1 cm;

proximal bracts with blade (10–) 15–50 mm, sheaths cylindric to ± expanded to mouth, 20–37 mm, mouth with narrow, ± purple band at top, usually Y- or V-shaped, mouth 0.7–1.8 mm wide.

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, usually purple or red-brown, veins usually indistinct, ovate to elliptic, 3.2–5.5 × 0.9–1.7(–2) mm, margins flat, less than 1/2 mature achene width, margins setose-ciliate distally, usually at least sparsely hispidulous to shortly setose;

beak ± distinct, apex brown to purple, setose-ciliate, distance from beak tip to achene apex usually more than 2 mm.

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

obovoid, body 1.5–2 × 0.8–1 mm.

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

scales purple or brown with pale, usually indistinctly veined, ovate to elliptic, 2.3–3.8 × 0.8–1.7 mm, midvein and margins ciliate, apex obtuse to short-awned.

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

scales purple or reddish brown with pale midvein, ovate to obovate, 3–4.4 × 1–1.4 mm, margins slightly ciliate, apex obtuse.

0.8–1.6(–2) mm.

1.5–3 mm.

spikes pistillate or often androgynous, purple to brown, proximal spikes pendent to erect, 14–25 × 4–7 mm.

spike staminate or androgynous, ± erect, 10–21 × 4.5–6 mm.

= 58.