Flora of North America species comparison

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

obtusely angled, 30–110 cm, glabrous.

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 brown;

sheaths of proximal leaves scabrous, fronts with red-brown spots or uniformly red-brown, prominently ladder-fibrillose, apex U-shaped, red-brown;

blades hypostomic, 4–9 mm wide, coriaceous, papillose abaxially.

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.

proximal bract longer than inflorescence, 3–8 mm wide.

erect, the proximal pendent, sessile or pedunculate; staminate 2–3; pistillate 4–6; the proximal pistillate spike 3–10 cm × 5–6 mm, base attenuate.

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.

divergent, dark pale brown with red-brown spots on apical 1/2, faintly 3–5-veined on each face, somewhat inflated, loosely enclosing achenes, ellipsoid or obovoid, 3–4 × 2.2–2.5 mm, leathery, dull, apex rounded or obtuse, glabrous;

beak red-brown, 0.5 mm, bidentate, orifice scabrous.

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

not constricted, dull.

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 red-brown, longer than perigynia, apex acute, scabrous, awned, awn to 2 mm.

1.5–2.5 mm.