Flora of North America species comparison

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

12–80 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.

2–6 per culm;

sheaths tight, inner band hyaline, 3.5–21 cm, apex concave, glabrous;

ligules rounded, 0.8–1.8 × 0.6–1.6 mm;

blades involute, 4–70 cm × 0.4–1.5 mm, widest leaf 0.8–1.5 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.

0.6–4 cm;

spike 1 (occasionally 1–3 smaller accessory spikes), gynecandrous with staminate portion of spike 1–3 mm wide, to 50-flowered and pistillate portion of spike 5–9.5 mm wide, to 27-flowered or plants sometimes unisexual with staminate and pistillate spikes on different plants.

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.

spreading to reflexed, castaneous to dark brown, 15-veined abaxially, faintly 7-veined adaxially, lanceolate-ovate to broadly ovate, 2.6–4.7 × 1.25–2.3 mm, 1.3–2.65 times as long as wide;

beak 0.5–1.7 mm, 0.2–0.65 length of body, serrulate, teeth blunt, to 0.35 mm, soft.

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

ovate, 1.4–2.2 × 1.2–1.7 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 ovate, 1.8–3.3 × 1.3–2.2 mm, apex acute.

1.5–2.5 mm.

(2–)2.2–3.6 mm.

scales lanceolate to ovate, 1.7–5.5 × 1–2.2 mm, apex acute.