Flora of North America species comparison

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

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

V-shaped, 12–30 cm × 1–6 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 ± 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.

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.

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.

anthers 0.3–0.4 mm;

styles 1 mm;

stigmas 1.3–1.6 mm.

anthers 0.5–0.7 mm;

styles 0.4–0.6 mm;

stigmas 1–1.5 mm.

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

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

= 168, 170, 172.