Flora of North America species comparison

trigonous, 5–35 cm × 0.7–1.2 mm, glabrous.

basally cormlike, trigonous, 30–100 cm × 2–4 mm, glabrous.

V-shaped, 5–25 cm × 1.5–3.5 mm, slightly scabridulous on abaxial margins, midrib.

V-shaped to flat, 20–70 cm × 3–8 mm, adaxial surface, margins minutely scabridulous.

spikes loosely ± globose, 15–25 mm wide;

rays 1–10 cm;

rachis 1–4 mm;

bracts 3–7, ascending, V-shaped, 3–20 cm × 1–3 mm;

rachilla deciduous, wingless.

spikes loose, broadly ellipsoid to ovoid, 4–7 × 2–6 cm;

rays 6–13(–16), 4–25 cm, glabrous;

rachis 1.5–3 cm;

bracts 3–6, horizontal to ascending at 30°, flat, 5–35 cm × 2.5–6 mm;

rachilla persistent, wings 0.4–0.5 mm wide.

3–24, compressed, oblong-lanceoloid, 4–12 × 2.5–3.2 mm;

floral scales deciduous, 3–9, pale reddish brown, ovate, laterally 3–5-ribbed, 2.5–3 × 2–2.4 mm, apex acute to obtuse.

(13–)20–60(–74), linear, ± terete, (11–)13–25(–28) × 1.2–1.5 mm;

distal spikelets spreading or ascending;

floral scales persistent, (2–)3–6, stramineous, red-purple striate, laterally 3–5-ribbed, ovate-lanceolate, 4.5–5.3 × 1.2–1.5 mm.

anthers 1–1.2 mm;

styles 0.4–0.6 mm;

stigmas 1–2 mm.

anthers 1–1.5 mm;

styles 1.5 mm;

stigmas 1.5 mm.

dark brown, ± stipitate, ellipsoid, 2–2.4 × 0.9–1.2 mm, apex obtuse, apiculate, surfaces glabrous, puncticulate, or papillose.

brown to purplish brown, oblong-linear (5–6 times long as wide), 2.6–3 × 0.5–0.6 mm, base cuneate, apex obtuse, surfaces puncticulate.

= 166.