Flora of North America species comparison

(20–)30–100 cm, 2.5–8 mm wide basally, 0.7–1.6 mm wide distally.

erect, stiff, 20–50 cm.

sheaths usually loose, proximally green-and-white-striped, not white spotted, with conspicuous transverse veins on back, fronts hyaline, sometimes transversely rugose and red dotted, thin, white or hyaline and fragile at mouth;

ligules 2–7 mm, shorter to longer than wide;

widest leaf blades (3–)4–8 mm wide.

sheaths pale brown abaxially, inner band hyaline, conspicuously red tinged, concave at summit;

ligules as long as broad;

blades pale to bluish green or gray-green, flat, 10–25 cm × 2–3 mm, shorter than culms, thin.

with 5–15 spikes, 1–5 cm × 8–15 mm, occasionally compound, then somewhat larger;

proximal bracts to 3 cm;

spikes with 5–15 ascending to spreading perigynia;

proximal internodes shorter than to 1.5 times as long as proximal spikes.

2–4(–6) cm × 5–10 mm;

proximal bracts prolonged, subequal to spikes, distal bracts scalelike.

5–8, gynecandrous, proximal 2 or 3 spikes 1 cm or less apart, distal approximate, containing 10–20 perigynia, oblong, 5–14 × 3–5 mm;

terminal spikes staminate for less than 1/2 length, scarcely clavate.

pale green to pale brown, veinless or 3–7(–12)-veined abaxially, rarely veined adaxially, 3.5–5.5 × 2–3 mm, body somewhat spongy, base thickened, margins serrulate distally;

beak 0.6–1.6 mm, apical teeth 0.3–1 mm.

appressed-ascending, pale brown or brown, several-veined, elliptic-obovate, 1.5–2 × 1 mm, widest near middle, membranous;

beak short, entire.

circular to elliptic- circular, 1.8–2.1 × 1.6–2 mm.

yellow-brown, elliptic, 1–1.25 × 0.8 mm, dull to slightly glossy.

scales hyaline or brown with green, 1–3-veined center, ovate, 2.6–4.4 × 1.3–2.4 mm, body shorter to slightly longer than perigynium, apex acuminate to short-awned.

scales brown with pale green center and narrow hyaline margins, broadly ovate, much shorter than perigynia, apex obtuse.

1.5–3 mm.

= 60 (Chukotka Peninsula).