Flora of North America species comparison

trigonous, 5–50 cm × 0.5–1.5 mm, glabrous.

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

V-shaped, 12–30 cm × 1–6 mm.

V-shaped, 20–50 cm × 4–7 mm.

spikes ± globose to broadly ovoid, 8–20 mm wide;

rays 1–8 cm;

rachis 2–5 mm, glabrous;

bracts 3–8, weakly ascending, flat, 3–20 cm × 1–3.5 mm;

rachilla deciduous, wingless.

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.

3–18, compressed, ovoid to oblong-lanceoloid, 4–15 × 2.6–3.4 mm;

floral scales deciduous, 3–18, laterally stramineous to reddish brown, laterally 3–4-ribbed, broadly ovate, 1.8–2.5 × 1.3–1.6 mm, apex with mucro 0.1–0.2 mm.

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 0.5–0.7 mm;

styles 0.4–0.6 mm;

stigmas 1–1.5 mm.

anthers 1.5–2 mm;

styles 2–2.3 mm;

stigmas 2–3 mm.

dark brown, sessile, broadly ellipsoid, 1.5–2 × 1–1.5 mm, apex obtuse, apiculate, surface glabrous, puncticulate, or papillose.

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

= 168, 170, 172.