Flora of North America species comparison

straight or arcuate, 2–85 cm.

purple-red to (3.2–)4.1–7.4 cm at base, 11–41 cm;

vegetative shoots 26–42 cm, 0.72–1.3 as long as culms.

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).

deep green or proximal ones whitish proximally, widest blades of culms (3.7–)4.3–5.5 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.

8.8–36 cm, 0.68–0.95 of culm height;

internodes between proximal scales in proximalmost spike 2.4–3 mm;

internodes between distal lateral spikes 1.4–13 cm, longest internode (per plant) between distal lateral spikes 3.1–13 cm;

peduncle of terminal spike 1.4–9.8(–14.1) cm, longest peduncle per plant 1.8–9.8(–14.1) cm;

proximal bract sheaths tight, hyaline band of adaxial face with apex truncate, concave, or slightly convex, elongate to 1.3 mm beyond apex;

ligules 4–4.9(–9.6) mm;

blades white between veins proximally;

bract blade of distalmost lateral spike usually exceeding or occasionally exceeded by terminal spike;

longest bract blade of distalmost lateral spike 4.9–12 cm.

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.

2–5, widely separate or the distalmost 2 overlapping;

lateral spikes pistillate, with (2–)4–7(–11) perigynia, longest per plant with 5–7(–11), 6–21 × 3.2–5.7 mm, ratio of longest lateral spike length (in mm) to perigynia number = 2–2.4;

terminal spikes 12–49 × (1.3–)2.1–4 mm, longest per plant (21–)26–49 mm, usually much exceeding distalmost lateral spike.

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.

distichously imbricate, ascending, prominently 49–64-veined, narrowly obovate or narrowly elliptic, obtusely trigonous in cross section, (3.7–)4.2–4.9 × 1.6–1.9, 2.3–2.7(–2.9) times as long as wide, 1.6–1.8(–1.9) times as long as achene bodies, base tapered, apex gradually or abruptly tapered;

beak absent or straight, 0–0.7(–0.9) mm, 0–17% of perigynium length.

1–1.8 × 0.7–1.4 mm.

3.1–3.3 × 1.5–1.8 mm, tightly enveloped by perigynia, base abruptly contracted, apex abruptly contracted;

stipe straight, 0.3–0.6 mm;

body 2.4–2.7 mm;

beak straight, 0.2–0.3 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.

scales 2.8–4.8 × 1.6–2.1 mm, body (2–)2.3–2.9 mm, midrib prolonged as awn 0.6–2.8 mm.

scales 4.2–6.5 × 1.6–2.4 mm, apex obtuse or acute, awnless.