Flora of North America species comparison

erect, not stiff, 15–90 cm.

10–95 cm.

sheaths pale brown abaxially, inner band thin, hyaline, sometimes slightly red tinged, concave at summit;

ligules slightly longer than wide;

blades pale green to gray-green flat, 10–20(–30) cm × (1.5–)2–4 mm, subequal to shorter than culms, not stiff.

3–5 per culm;

sheaths tight, inner band hyaline, 1.8–13 cm, apex concave, glabrous;

ligule of distalmost leaf obtuse to rounded, 0.6–2.2 mm;

blades plicate, 6–31 cm × 0.6–2.4(–2.7) mm, widest leaf 1–2.4(–2.7) mm wide.

2–15 cm × 5–10 mm;

proximal bracts shorter than to exceeding spikes;

distal bracts usually scalelike.

0.8–3.7 cm;

spikes 2–5(–7);

lateral spikes pistillate often with few staminate flowers proximally, 3–9.5 mm, sessile, staminate portion 3-flowered, to 2.2 mm, pistillate portion 3–18-flowered, 2.3–8 mm;

basal 2 spikes 2.1–11 mm apart;

terminal spike 5.2–20 mm, gynecandrous, staminate portion 3–10-flowered, 2.2–14.5 × 0.7–1.4 mm, pistillate portion 4–16-flowered, 3–7 × 4–5.8 mm.

4–8, gynecandrous, proximal ± remote, distal spikes approximate, sometimes flexuous, containing (5–)10–20(–30) perigynia suborbicular to oblong, 3–12 × 3–5 mm;

terminal spike staminate for less than 1/2 of length, often clavate due to more conspicuous staminate part.

appressed-ascending, gray-green, becoming yellowish brown, obscurely many-veined, elliptic-ovate, 1.8–3 × 1.2–1.7 mm, widest near middle, membranous;

beak abaxial suture inconspicuous, small marginal teeth.

spreading to reflexed, castaneous to dark brown, 4–12-veined abaxially, sometimes faintly, 0(–6)-veined adaxially over achene, ovate, often convexly tapered from widest point to beak, forming a “shoulder,” 1.95–3(–3.3) × 1.1–1.8 mm, 1.4–2(–2.2) times as long as wide;

beak 0.4–0.95 mm, 0.18–0.44 length of body, setulose-serrulate, teeth 0.15–0.4 mm.

pale brown, oblong-obovate, 1.25–1.5 × 1–1.25 mm, dull to slightly glossy.

ovate, 1.2–1.8 × 0.95–1.5 mm.

scales hyaline with green, 3-veined center when young, usually brownish tinged in age, broadly ovate, subequal to, not concealing perigynia, apex obtuse to acutish.

scales ovate, 1.2–2.1(–2.4) × 1–1.6 mm, apex obtuse.

scales ovate, 1.4–2.9 × 1–1.3 mm, base clavate, apex obtuse to acute.

0.6–1.4 mm.

= 56.