Flora of North America species comparison

15–75 cm.

(16–)30–70(–95) cm.

2–4 per culm;

sheaths with inner band hyaline, 3.5–12 cm, apex deeply concave, glabrous;

ligules 1.7–7 mm, apex acute or often emarginate;

blades plicate to flat, 9–50 cm × 0.8–3.9 mm, widest leaf 2.1–3.9 mm wide.

sheath adaxially white-hyaline or summits often tinged brown or copper, U-shaped, not prolonged more than 2.8 mm;

distal ligules 1–2.5(–3.5) mm;

blades (2–)3–5 per fertile culm, 10–30 cm × (1.5–)2–3(–4) mm.

1.8–7 cm;

spikes 4–8;

lateral spikes pistillate often with few staminate flowers proximally, 2.8–10.8 mm, sessile, staminate portion (0–)1–6-flowered, (0–)0.8–4.6 mm, pistillate portion 4–25-flowered, 2–7.6 mm;

basal 2 spikes 5–27 mm apart;

terminal spike gynecadrous, 4.7–16.5 mm, staminate portion 3–13-flowered, 1.8–12.7 × 0.9–2.1 mm, pistillate portion 6–23-flowered, 2.8–7.3 × 4.4–6 mm.

usually open, often nodding, whitish, green, or gold to dark brown, occasionally beaded, (1.7–)2.5–5 cm × 10–15(–17) mm;

proximal internode 4–14 mm; 2d internode (2.5–)4–10 mm;

proximal bracts scalelike to bristlelike, shorter than inflorescences.

4–10, distant, distinct, oblanceloid to broadly ovoid, 8.5–20 × 3–9 mm, base acute to attenuate, apex tapered to truncate.

spreading to reflexed, green, 6–14-veined abaxially, 0–6-veined adaxially over achene, elliptic to elliptic-ovate, 1.8–2.9 × 1–1.9 mm, 1.2–2.1 times as long as wide;

beak 0.2–0.6 mm, 0.09–0.33 length of body, smooth.

appressed to ascending-spreading, often hyaline, white, green, or gold, brown or coppery over achene, conspicuously (0–)4–11-veined abaxially, conspicuously 0–4(–7)-veined adaxially, ovate or, sometimes, lanceolate, plano-convex or flat, (3.7–)4.5–6 × 1.2–2 mm, 0.5–0.8 mm thick, length 2.8–3.1 times width, margin flat, including wing (0.1–)0.2–0.4(–0.5) mm wide, ciliate-serrulate, without glossy metallic sheen;

beak green or gold to red-brown or chestnut-brown, white-hyaline at tip, cylindric, unwinged, ± entire for 0.4–1 mm, abaxial suture conspicuous with white-hyaline margin or inconspicuous, distance from beak tip to achene (1.6–)1.9–3 mm.

ovate to orbiculate, 1.2–1.6 × 0.85–1.4 mm.

ovate or obovate, 1.4–2.1(–2.7) × (0.8–)1–1.5 mm, 0.4–0.6 mm thick.

scales ovate, 1.2–2.2 × 1–1.6 mm, apex acute.

scales white, gold, coppery, or brown, with white or green to brown midstripe, lanceolate to broadly ovate, (3.4–)4.2–5.8 mm, equaling or longer than and narrower than or equaling perigynia, margin white, 0.1–0.3 mm wide, apex obtuse to acuminate.

scales ovate, 1.7–3.3 × 1–1.4 mm, apex acute.

1–1.9 mm.

early deciduous ro short-persistent.

= 76, 78.