Flora of North America species comparison

(24–)35–85 cm.

20–30 cm.

sheath adaxially white-hyaline, summits U-shaped to rounded;

distal ligules 2–3 mm;

blades (1–)2–4(–5) per fertile culm, flat ± to tip, 7–22 cm × (1.5–)2–3.5(–4) mm.

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.

stiffly erect, usually open, brown, 1.5–4 cm × 10–15 mm;

proximal internode (2.5–)4–10 mm; 2d internode (2.5–)3–6 mm;

proximal bracts scalelike or bristlelike, shorter than inflorescences.

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.

5–9, usually loosely aggregated, ovoid to broadly ovoid, 9–14 × 6–8 mm, base attenuate, apex rounded to tapered.

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 to ascending-spreading, gold to light brown, conspicuously 3–9-veined abaxially, conspicuously 2–5-veined adaxially, lanceolate to ovate, usually flat except over achene, 3.4–4.7(–5.2) × 1.3–2.1 mm, 0.4–0.5 mm thick, margin flat, including wing 0.2–0.6 mm wide;

beak red-brown or gold at tip, usually cylindric, unwinged, ± entire for 0.3–0.5 mm, sometimes flat, ciliate-serrulate to tip, abaxial suture often with conspicuous white margin, distance from beak tip to achene (1.2–)1.5–2 mm.

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.

elliptic to broadly ovate, 1.1–1.8 × 0.9–1.2 mm, 0.4–0.5 mm thick.

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

scales reddish gold to brown or greenish, often white-hyaline at tip or base, with pale or green midstripe, narrowly to broadly ovate, 3.4–5 mm, length and width less or greater than perigynia, margin not white-hyaline, apex acute to acuminate.

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.

long-persistent.

= 62, 64, 66, 68.