Flora of North America species comparison

straight or arcuate, 2–85 cm.

7–55 cm, scabrous distally;

bases (remnants of old leaves) fibrous.

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).

blades pale to dark green, 0.7–3.6 mm wide, herbaceous, papillose to scabrous abaxially, papillose to scabrous adaxially, blades of distal cauline leaves poorly developed.

peduncles of terminal staminate spikes 0–28 mm;

bracts to 18 cm × 0.6–3.4 mm;

inner band of sheaths concave or truncate.

with both staminate and pistillate spikes;

peduncles of staminate spikes 0.7–13 mm;

proximal nonbasal bracts leaflike, shorter than inflorescences.

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.

proximal pistillate spikes 1–3 (basal spikes 0);

cauline spikes overlapping or somewhat separated, with (2–)3–13 perigynia; staminate spikes 8–22.5 × 1.4–4.6 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.

yellowish green to pale olive, veinless, obovoid, 2.7–4.6 × 1.2–1.7 mm, as long as wide;

beak straight, pale green to olive, occasionally with reddish brown tinge near apex, 0.9–1.6 mm, weakly ciliate-serrulate, apical teeth 0.1–0.6 mm.

1–1.8 × 0.7–1.4 mm.

dark brown, obovoid to globose, obtusely trigonous in cross section, 1.3–2.2 × 0.9–1.6 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.

pistillate scales pale or usually dark reddish brown, with narrow white margins, ovate to lanceolate, 2.7–4.3 × 0.8–2.4 mm, apex acute to long-acuminate; staminate scales obovate to lanceolate, 3.7–6.1 × 1–1.4 mm, obtuse to acute or acuminate.

0.9–3.1 mm.

1.9–4.6 mm.

3.