Flora of North America species comparison

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

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

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

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, 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 0.3–0.4 mm;

styles 1 mm;

stigmas 1.3–1.6 mm.

anthers 0.6 mm;

styles 0.6–1.2 mm;

stigmas 1–1.4(–1.7) mm.

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

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