Flora of North America species comparison

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

central, coarse, trigonous, 40–110 cm, smooth.

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.

basal sheaths pale green to brownish or pale red tinged, base with marescent remains of previous year’s leaves;

longest ligules 2–10(–12) mm, less than 2 times longer than wide;

blades glaucous, flat to V-shaped, (4–)5.5–13 mm wide, glabrous.

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.

15–50 cm;

proximal 2–4 spikes pistillate, ascending to arching;

distal spikes erect;

terminal 3–6 spikes staminate.

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.

ascending, obscurely 10–15-veined, veins somewhat impressed, narrowly ovoid, (4.5–)5.5–7.7 × 1.6–3 mm, glabrous;

beak obscure, 0.9–1.7 mm, bidentulate, teeth straight, 0.4–0.8 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 lanceolate to ovate, apex obtuse to acute, glabrous, awn 0.9–8.5 mm, scabrous.

1.5–2.5 mm.