Flora of North America species comparison

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

trigonous, (3–)10–50 cm × 0.4–1.2 mm, glabrous.

flat, 5–40 cm × 1–3.5 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 rather densely ovoid to globose, 1.2–3.5 cm;

rays 0 or 1–4, 1–6 cm;

rachis 1–3.5 mm;

bracts 2–4, horizontal to reflexed, flat, 6–25 cm;

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.

15–60, compressed, oblong-lanceoloid, (3–)6–22 × 2.5–4 mm;

floral scales deciduous, 5–22, off-white to light reddish brown, laterally 3–5-ribbed, ovate-elliptic, 2.5–4 × 2–2.6 mm, margins loosely spreading or clasping achene, apex entire to mucronate, mucro 0.05–0.2 mm.

anthers 0.3–0.4 mm;

styles 1 mm;

stigmas 1.3–1.6 mm.

anthers 0.3–0.6 mm;

styles 1 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 or black, sessile, oblong-ellipsoid to ellipsoid, 1.7–2.2 × 0.8–1.2 mm, apex obtuse, apiculate, surfaces puncticulate.

= 166.