Flora of North America species comparison

20–90 cm, 1.5–3 mm wide basally, 0.9–1.1 mm wide distally.

straight, 25–60 cm.

sheaths tight, green, fronts hyaline, yellowish and thickened at mouth;

ligules to 3 mm, as long as wide;

widest leaf blades 2.5–4.5 mm wide, sometimes papillose adaxially.

of flowering stems shorter than stem, to 13.5 cm × 1.5–3.1(–4.3) mm.

with (3–)5–10 spikes, 1.5–3.5 cm × 8–15 mm;

proximal internodes equaling or shorter than proximal spikes;

proximal bracts 1–5 cm;

spikes with 8–20 ascending or spreading perigynia.

peduncles of staminate spikes 5–70 mm;

bracts 90 × 0.7–2.2 mm;

inner band of sheaths with brown, convex projection to 3.2 mm.

proximal pistillate spikes 1–3(–4), distant, erect or ascending, usually conspicuously pedunculate, ovoid to short-cylindric, proximal 10–20 × 5–9.5 mm;

terminal staminate spikes 10–33 × 1.6–4.2 mm.

pale green, pale yellow, or pale brown, 9–15-veined abaxially, 3.5–5 × 2.2–3 mm, margins serrulate distally;

beak 0.8–1.2 mm, apical teeth 0.4–0.6 mm.

ascending, yellowish, 3.1–5.5 × 1.2–2.1 mm, apex gradually narrowed into straight, serrulate beak;

beak 0.7–1.6 mm.

suborbiculate, 1.9–2.5 × 1.5–2 mm.

1.5–2 × 1–1.5 mm.

scales hyaline or brown with green, 3-veined center, ovate, (2.4–)3–4.3 × (1–)1.6–3 mm, body slightly shorter to longer than perigynium and as wide, apex awned to 1.5–3.5(–4) mm.

2.2–2.5 mm.

2–3.6 mm.

pistillate scales dark brown, 2.1–3.9 × 1.4–2.4 mm, margins conspicuously white-hyaline; staminate scales with broad, white, hyaline margins.