Flora of North America species comparison

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

trigonous, 50–100 cm × 5–8 mm, glabrous.

3–6, V-shaped, 20–50 cm × 5–8(–10) mm.

spikes loosely ovoid, 15–25 mm wide;

rays 1–6, 2–7 cm;

bracts 2–5, 3–20 cm, ascending;

rachilla deciduous, winged.

spikes not appearing lateral, rays 5–8, 2–7(–12) cm;

bracts 3–4, ± horizontal to ascending at 45°, V-shaped, 5–25 cm × 1.5–8 mm;

spikes 1–4, ovoid, 2–4 × 2–3 cm;

rachis 1–2.7 cm, smooth or hispidulous;

rachilla persistent, wingless or with hyaline wings scarcely 0.1 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.

7–14, flattened, lanceoloid, 10–20 × 2–2.5 mm;

floral scales 10–30, laterally dark brown to reddish brown, medially greenish, laterally 5–9-ribbed, ovate-deltate;

anthers 3, 0.5 mm;

styles 0.5 mm;

stigmas 1.2–1.6 mm.

anthers 0.3–0.4 mm;

styles 1 mm;

stigmas 1.3–1.6 mm.

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

brown, sessile, ellipsoid, 1.4–1.6 × 1.4–1.5 mm, apex obtuse, apiculate.