Flora of North America species comparison

coarse, 1.5–2.8 mm thick, typically with long, unbranched segments from which shoots arise singly every few nodes.

straight or arcuate, 2–85 cm.

sharply trigonous, (10–)20–80 cm, scabrous-angled 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).

basal sheaths dark brown;

sheaths with hyaline inner band, apex prolonged 0.3–1.6 mm beyond base of blade, glabrous;

ligules 0.6–2.7 mm;

blades 1–3.7 mm wide.

peduncles of terminal staminate spikes 0–28 mm;

bracts to 18 cm × 0.6–3.4 mm;

inner band of sheaths concave or truncate.

dense to elongate, 1–3 cm;

spikes 4–12(–18), usually unisexual; staminate spikes lanceoloid; pistillate spikes ovoid.

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, 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.

dark reddish brown, essentially veinless, stipitate, broadly ovate to rhombic-orbicular, thickly plano-convex, 1.8–2.8 × 1.1–1.7 mm, shiny;

beak 0.25–0.5 mm, hyaline, oblique or obscurely bidentulate.

1–1.8 × 0.7–1.4 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.

0.9–3.1 mm.

1.8–3.1 mm, apiculus smooth to warty (30X).

scales reddish brown to dark brown, with narrow hyaline margins, ovate, apex acute to acuminate-awned, shiny.