Flora of North America species comparison

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

erect, stiff, 20–50 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.

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 5–10 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.

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 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.

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 × 1.6–1.8 mm.

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

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

1.5–2.5 mm.

= 60 (Chukotka Peninsula).