Flora of North America species comparison

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

aphyllopodic, smoothly 3-angled, 8–40 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.

sheath white-hyaline adaxially, summit U-shaped, smooth;

distal ligule 0.5–4.3 mm;

blades 0–3 per culm, 12 cm × 1.2–3 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.

green or pale brown, 1.6–3 cm × 7–15 mm;

proximal internode (2–)4–8 mm, 2d internode 1.7–4 mm;

bracts appressed to ascending.

3–8, densely clustered except, often, the proximal 1–2, obovoid-oblanceoloid, 10–16 × 5–7 mm, base acute to acuminate, apex truncate.

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.

appressed, green or gold to light brown, conspicuously 3–12-veined abaxially, 0–9-veined adaxially, wing 0.1–0.15(–0.2) mm wide, narrowly lanceolate, (4.6–)5.5–7.3 × 0.7–1.2 mm, 0.3–0.4 mm thick;

beak tip white, green, or gold, narrowly flat, distance from beak tip to achene 3–5 mm, ± ciliate-serrulate.

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

elliptic to ovate, 1–1.8 × 0.6–0.8 mm, 0.3–0.4 mm thick.

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 white- or gold-hyaline with green or gold midstripe, lanceolate to ovate, to 3.5–4.5 mm, shorter than or longer than perigynia.

1.5–2.5 mm.

= 64.