Flora of North America species comparison

trigonous, 5–25 cm × 1–1.5 mm, glabrous.

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

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

spikes loosely ovoid, 15–25 mm wide;

rays 1–6, 2–7 cm;

bracts 2–5, 3–20 cm, ascending;

rachilla deciduous, winged.

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.

5–30, linear, flattened, 6–22 × 1.5–2.2 mm;

floral scales ± deciduous, (4–)8–12, red, reddish purple, or reddish brown, medially green, elliptic, laterally 2–4-ribbed, 2.3–3.1 × 1.2–2 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 0.3–0.4 mm;

styles 1 mm;

stigmas 1.3–1.6 mm.

anthers 1–1.5 mm;

styles 1.5 mm;

stigmas 1.5 mm.

brown to dark purplish brown, broadly ellipsoid, 1–1.3 × 0.6–0.9 mm, surfaces puncticulate.

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.