Flora of North America species comparison

straight or arcuate, 2–85 cm.

obtusely or acutely angled, 20–120 cm, glabrous.

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).

basal sheaths red-brown;

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

blades hypostomic, 3–7 mm wide, coriaceous, papillose abaxially.

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 bract longer than inflorescence, 3–6 mm wide.

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.

arching, at least the proximal pendent; staminate 2–3(–5); pistillate 2–5;

proximal pistillate spike usually sessile, 2.5–15 cm × 5–10 mm, base attenuate.

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.

divergent, brown, veinless, somewhat inflated, loosely enclosing achenes, ellipsoid or obovoid, 2.2–3.8 × 1.4–2.2 mm, leathery, glossy, apex rounded, glabrous;

beak colorless or with red-brown spots, 0.1–0.3 mm, orifice hyaline.

1–1.8 × 0.7–1.4 mm.

often constricted on 1 or both margins, glossy;

style base often bent.

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.

0.9–3.1 mm.

scales red-brown, longer and wider than perigynia, apex acute, awnless.

= 70, 72, 74.