Flora of North America species comparison

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

trigonous, 15–90 cm, scabrous-angled.

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 with apex of inner band hyaline, not or barely thickened, concave;

ligules 0.7–2.5 mm;

blades 1–3.2 mm wide.

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.

1–5 cm;

spikes 4–12, ascending, ovate;

proximal spikes pistillate;

middle spikes often staminate;

terminal spike pistillate or androgynous.

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.

thin-margined, wingless, lanceolate to ovate, 3.9–6.5 × 1.4–2.4 mm;

beak 1.2–2.7 mm.

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

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 reddish brown with green center and hyaline margins, ovate, 2.8–5.5 mm, shorter than to equaling perigynia, apex acute to acuminate.

1.5–2.5 mm.

= 70.