Flora of North America species comparison

10–90(–135) cm.

15–45 cm.

3–6 per culm;

sheaths tight, inner band hyaline, 1.8–2.5 cm, apex concave, glabrous;

ligules 0.6–2.5(–4.5) mm, rounded to ± acute;

blades plicate, 5–40 cm × 0.7–3.3(–3.8) mm, widest leaf 1–3.3(–3.8) mm wide.

sheaths adaxially white-hyaline, summits usually U-shaped;

distal ligules 0.8–1.5 mm;

blades 3–5 per fertile culm, occasionally folded, if not folded, margins revolute, 5–10 cm × 1.5–2.5(–3) mm, thick, tough.

0.7–7.8 cm;

spikes (2–)3–8;

lateral spikes pistillate often with few staminate flowers proximally, 3–15.5 mm, sessile, staminate portion 7-flowered, to 8.2 mm, pistillate portion 3–32-flowered, 2.5–11 mm;

basal 2 spikes 1.7–42 mm apart;

terminal spike gynecandrous, 5–24 mm, staminate portion 2–17-flowered, 2–16.5 × 0.9–2 mm, pistillate portion 4–26-flowered, 2.6–9 × 4.9–9.1 mm.

dense to ± open, whitish, gold, or brown, (1.5–)2–3(–3.7) cm × 6–12 mm;

proximal internode 4–11 mm; 2d internode 2.5–7 mm;

proximal bracts scalelike or bristlelike, shorter than inflorescences.

4–6, distant, distinct, lanceloid to ovoid, 10–15 × 4–6 mm, base tapered to attenuate, apex rounded to acute.

spreading to reflexed, castaneous to dark brown, 2–14-veined abaxially, 0–12-veined adaxially over achene, lanceolate to ovate, (2.65–)2.9–4.75 × 0.8–2.1 mm, (1.7–)1.8–3.2(–3.6) times as long as wide;

beak (0.85–)0.95–2 mm, (0.4–)0.45–0.86 length of body, serrulate, teeth (0–)0.15–0.5 mm.

appressed or appressed-ascending, green, gold, or coppery, conspicuously 7–14-veined abaxially, conspicuously 3–8-veined adaxially, lanceolate or ovate to oblanceolate or obovate, plano-convex, (3.7–)4.5–6 × 1.5–2.6 mm, 0.5–0.7(–0.9) mm thick, margin flat, including wing 0.2–0.4(–0.5) mm wide;

beak brown to gold or reddish, often white-hyaline at tip, ± cylindric, ± ciliate-serrulate for distal 0.2–0.7 mm, abaxial suture with white margin, or sometimes inconspicuous, distance from beak tip to achene (0.6–)1–2 mm.

ovate-lanceolate to rhombic-ovate, 1.3–2.1 × 0.8–1.55 mm.

lanceolate to ovate or obovate, 1.9–2.4 × 1.2–1.6 mm, 0.5–0.7 mm thick.

scales ovate, (1.4–)2.1–3.1 × 0.7–2.3 mm, apex acute to sometimes obtuse.

scales red-brown, with straw colored to tan midstripe, usually ovate, to 4–5 mm, equaling, covering at least perigynium bodies, margin white, 0.2–0.6 mm wide, apex obtuse to short-awned.

scales ovate-lanceolate to ovate, 1.3–3.8 × 0.8–1.7 mm, base clavate, apex acute.

0.8–1.6(–2) mm.

= 58.