Flora of North America species comparison

20–90 cm, pilose.

20–30 cm.

ligules shorter than wide;

blades 1.5–4 mm wide, pilose on both surfaces.

sheaths white-hyaline, summits usually U-shaped;

distal ligules 1–2(–2.5) mm;

blades 3(–5) per fertile culm, 10–40 cm × 2.2–3.2 mm.

lateral spikes 8–18 × 3–5.5 mm, usually crowded;

terminal spike gynecandrous, at least 1/2 of flowers pistillate, 10–20(–25) mm.

dense or sometimes open proximally, brown or purplish, 1.2–2(–2.5) cm × (8–)12–18 mm;

proximal internode 1.5–3.5 mm; 2d internode 0.5–2.5 mm;

proximal bracts bristlelike, shorter than inflorescences.

4–5, densely aggregated, usually at least proximal 1 distinct, obovoid, 9–12 × (5.5–)7–9 mm, base rounded or attenuate, apex rounded or acute.

ascending, weakly 9–18-veined, obovate-circular, ± trigonous in cross section, 2–3 × 1.1–1.6 mm, not papillose, glabrous;

beak absent.

appressed to ascending, usually dark brown, often green or gold distally and at margins, veinless or conspicuously 3–6-veined abaxially, inconspicuously veined adaxially, broadly obovate to broadly ovate, flat except over achene, 4–5.5 × 2–2.7 mm, 0.25–0.4(–0.5) mm thick, margin flat, including wing 0.4–0.6 mm wide, ciliate-serrulate at least on distal body;

beak purplish or brown to red-brown, white-hyaline at tip, cylindric, unwinged, entire for 0.5–1.3 mm from tip, abaxial suture with conspicuous white margin, distance from beak tip to achene (1.9–)2.2–2.9 mm.

1.6–2.1(–2.6) × 0.8–1.3 mm.

obovate or ovate, 1.6–2.1 × 1–1.4 mm, 0.3–0.5 mm thick.

scales ovate, 1.8–2.5 × 0.7–1.3 mm, apex obtuse, sometimes mucronate, shorter than perigynia.

scales red- or purple-brown to dark brown, sometimes gold above the middle, sometimes with paler midstripe, ovate to broadly ovate, 4.3–5.6 mm, shorter than or equaling perigynium beaks, equaling or narrower than perigynia, margin white-hyaline, green, or gold 0.15–0.3 mm wide, apex usually acute.

scales ovate to lanceolate, 2.1–5.2 mm, apex acuminate.

1.3–2.2 mm.

long-persistent.

= 52.