Flora of North America species comparison

(20–)30–100 cm, 1.5–3.5 mm wide basally, 0.7–1.2 mm wide distally.

solitary or not, erect, (25–)40–90(–110) cm.

sheaths usually loose, proximal green-and-white-striped and green-and-white-mottled, with conspicous transverse veins on back, fronts white to hyaline, sometimes red dotted and transversely rugose, yellow or brown and thickened at mouth;

ligules 1–4.5 mm, shorter than to as long as wide;

widest leaf blades 3.5–5 mm wide.

6–12;

basal sheaths purplish red;

sheath of distal leaf 0–1.5(–2.5) cm;

ligules rounded, 2.5–6 mm;

blades 12–34 cm × 4–11 mm.

with 5–10 spikes, (1.5–)2–5 cm × 8–13 mm;

proximal internodes shorter than to as long as proximal spikes;

proximal bracts to 3 cm;

spikes with 5–15 ascending to spreading perigynia.

2.5–17 cm;

peduncles of proximal pistillate spikes 0.7–3.5 cm, basal 2 peduncles 1–4(–12) cm apart;

peduncle of terminal spike 0.5–6 cm;

bracts leafy, usually sheathless, blades 8–26 cm × 2–7 mm.

proximal pistillate spikes 1–2(–3), densely (4–)8–35-flowered, separate to aggregated, globular, 2.5–4.2 × 2.6–4.1 cm;

terminal staminate spike 1, 0.5–6.5 cm × 1–4 mm.

pale green to pale brown, veinless or weakly 2–5-veined abaxially, 3.4–4.6 × 1.9–2.8 mm, body somewhat spongy, thickened at base, margins serrulate distally;

beak 0.7–1.4 mm, apical teeth 0.3–1 mm.

radiating out in all directions, strongly 16–25-veined, rhombic-ovoid, 12.5–20 × 4–8 mm, base cuneate, dull, glabrous or, sometimes, hispidulous;

beak poorly defined, 1.5–3 mm.

circular to elliptic-circular, 1.8–2.1 × 1.6–1.8 mm.

sessile, ellipsoid to obovoid, faces convex, angles not thickened, 3.3–4.8 × 2.6–3.7 mm;

style withering.

scales hyaline or pale brown with green, 1–3-veined center, ovate, 2.2–3.5 × 1.2–1.8 mm, body 2/3 as long to almost length of perigynia, apex acuminate to short-awned.

scales 1–5-veined, lanceolate-ovate to ovate-orbicular, 4–11 × 2–4.2 mm, apex obtuse to awned, awn to 7 mm, rough.

1.5–2.5 mm.

3, 2.5–4.8 mm.