Flora of North America species comparison

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

trigonous, 15–60 cm × 1–3 mm, glabrous.

flat, 5–40 cm × 1–3.5 mm.

2–6, flat to V-shaped, 6–30(–40) cm × 2–4 mm.

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.

spikes broadly ellipsoid, 5–45 × 10–30(–45) mm;

rays (2–)5–9, (0.3–)3–10 cm;

rachis 4–17 mm;

bracts 5–6, horizontal to ascending, V-shaped, 1.5–30 cm × 0.5–4 mm;

rachilla persistent, wings hyaline, 0.4–0.5 mm wide.

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.

5–30, pale greenish white or stramineous, compressed, linear-lanceoloid, 7–35 × (1.2–)1.4–2 mm;

floral scales deciduous, 6–34, spreading or appressed, laterally greenish white, often reddish or brown speckled, medially green, laterally 3–5-ribbed, medially 3-ribbed, elliptic, (2.2–)3–4(–4.4) × (1.2–)1.8–2.2 mm, apex acute.

anthers 0.3–0.6 mm;

styles 1 mm;

stigmas 1–1.5 mm.

anthers 0.6 mm;

styles 0.6–1.2 mm;

stigmas 1–1.4(–1.7) mm.

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

reddish brown to dark brown, stipitate, narrowly ellipsoid, 1.4–2 × 0.6–0.9 mm, apex apiculate, surfaces puncticulate.

= 166.