Flora of North America species comparison

(20–)30–100 cm, 2.5–8 mm wide basally, 0.7–1.6 mm wide distally.

25–90 cm, 1.6–2 mm wide basally, 0.6–0.7 mm wide distally.

sheaths usually loose, proximally green-and-white-striped, not white spotted, with conspicuous transverse veins on back, fronts hyaline, sometimes transversely rugose and red dotted, thin, white or hyaline and fragile at mouth;

ligules 2–7 mm, shorter to longer than wide;

widest leaf blades (3–)4–8 mm wide.

sheaths tight, green, fronts hyaline;

ligules less than 2 mm, as long as wide;

widest leaf blades 1.5–2.5(–3) mm wide.

with 5–15 spikes, 1–5 cm × 8–15 mm, occasionally compound, then somewhat larger;

proximal bracts to 3 cm;

spikes with 5–15 ascending to spreading perigynia;

proximal internodes shorter than to 1.5 times as long as proximal spikes.

with 4–10 spikes, 1.5–3.5 cm × 6–10 mm;

proximal internodes as long as to slightly longer than proximal spikes, rarely 2 times as long;

proximal bracts to 3 cm;

spikes with 3–10 ascending to spreading perigynia.

pale green to pale brown, veinless or 3–7(–12)-veined abaxially, rarely veined adaxially, 3.5–5.5 × 2–3 mm, body somewhat spongy, base thickened, margins serrulate distally;

beak 0.6–1.6 mm, apical teeth 0.3–1 mm.

brown, sometimes with green margins, faces obscurely veined, 2.5–4.5 × 1.5–1.9 mm, base of body somewhat spongy, margins serrulate distally;

beak 0.6–1.3 mm, apical teeth 0.2–0.3 mm.

circular to elliptic- circular, 1.8–2.1 × 1.6–2 mm.

elliptic-circular, 1.9–2 × 1.5–1.6 mm.

scales hyaline or brown with green, 1–3-veined center, ovate, 2.6–4.4 × 1.3–2.4 mm, body shorter to slightly longer than perigynium, apex acuminate to short-awned.

scales brown with green, 3-veined center, ovate, 3.4–4 × 1.6–2 mm, body wider than and as long as perigynium, apex acuminate to short-awned, awn less than 1 mm.

1.5–3 mm.

2.5 mm.

straight, 0.07 mm wide.