Flora of North America species comparison

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

trigonous, 50–100 cm × 2.5–3 mm, glabrous.

V-shaped, 20–50 cm × 4–7 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 loosely ovoid, 1.5–7 cm wide;

rays 5–13, 1–21 cm; 2d order rays 0.5–3 cm;

bracts 3–8, V-shaped, 5–50 cm × 2.5–5.6 mm;

rachilla persistent, wings 0.4–0.6 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.

5–30, compressed, linear, (5–)12–40 × 1.5–2.2 mm;

floral scales deciduous, 6–24, reddish brown to yellowish brown laterally, greenish medially, 5–7-ribbed, elliptic, 3–4 × 1.4–1.6 mm, apex obtuse.

anthers 0.3–0.4 mm;

styles 1 mm;

stigmas 1.3–1.6 mm.

anthers 1.5–2 mm;

styles 2–2.3 mm;

stigmas 2–3 mm.

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

dark brown, sessile, oblong, 1.5 × 0.4–0.5 mm, apex apiculate, surfaces puncticulate.