Flora of North America species comparison

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

up to 12 cm, scabrous.

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.

blades V-shaped in cross section when young, (0.5–) 1.2–2 mm wide, papillose, scabrous.

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.

proximal bracts usually with sheath 2.5–3 mm;

lateral spikes usually 1–2 distal, 2–3 basal, 3–7 × 4 mm;

terminal spike staminate or gynecandrous, 7–8 × 1.5–2 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.

15–27-veined, most veins on faces 0.1 mm wide or wider, about as wide as marginal veins, obovoid, 3–4 × (1.1–)1.4–1.9(–2.1) mm, glabrous proximally, hispidulous distally;

beak distinct, abruptly bent, 0.1–0.5 mm.

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

sessile, with 2 faces convex, 2–2.4 × (1.1–)1.4–1.9 mm, apex retuse.

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 3–5(–10)-veined, obovate, 3.5–4.2 × 1.3–2 mm, proximal ones longer than perigynia, apex subobtuse to acuminate and often mucronate.

1.5–2.5 mm.

scales 5-veined or more, 4–5 × 1.5–2.1 mm.