Flora of North America species comparison

obtusely trigonous in cross section, (25–)35–125 cm, smooth.

straight or arcuate, 2–85 cm.

ligules 1.5–13(–18) mm, narrower to wider than long;

blades yellowish or light green, M-shaped to flat, widest leaves of vegetative shoots (3.5–)4–12 mm wide, smooth or sometimes papillose adaxially, especially distally.

of flowering stems shorter than to exceeding culms, to 20 cm × 0.8–5.4 mm;

ligules on distal cauline leaves usually obsolete (except in 414.b Carex viridula subsp. brachyrrhyncha).

(3–)15–50 cm;

bract sheaths prolonged, apex truncate to convex;

proximal (1–)2–4 spikes usually androgynous or, occasionally, pistillate, erect or the proximal spreading, ovoid to short cylindric.

peduncles of terminal staminate spikes 0–28 mm;

bracts to 18 cm × 0.6–3.4 mm;

inner band of sheaths concave or truncate.

proximal pistillate spikes 1–8, contiguous or proximal distant, sessile or short-pedunculate, globose to short-cylindric, 4–17.5 × 3–11 mm;

terminal staminate spike sessile or pedunculate, 5–25 × 1–3.6 mm.

spreading to somewhat reflexed, pale green, 20–26-veined, essentially uninflated, lanceolate, (8.3–) 10.5–13.5(–15) × 1.5–2.4 mm, 4–7 times as long as wide, apex tapered to bidentulate;

beak absent.

spreading, yellow to dark olive, 1.8–4.2 × 0.8–2 mm, apex gradually or abruptly narrowed;

beak straight or reflexed less than 20°, 0.3–2.1 mm, scabrous or smooth.

2.3–3.4(–3.8) × 1.8–2.4 mm, 1.3–1.8 times as long as wide.

1–1.8 × 0.7–1.4 mm.

scales ovate to narrowly ovate, mostly 1/2–2/3 as long as perigynia, apex acute to acuminate-awned.

3–5 mm.

0.9–3.1 mm.

pistillate scales pale brown to reddish brown, 1.4–3.2 × 0.8–1.7 mm, margins pale, narrow, hyaline; staminate scales reddish brown, lanceolate to ovate, 2.3–5.2 × 0.7–2 mm, margins narrowly pale hyaline, apex obtuse to acuminate.