Flora of North America species comparison

trigonous, 30–150 cm × 1–5(–8) mm.

trigonous, 20–55 cm × 1.2–11.8 mm, glabrous.

bladeless.

V-shaped, 12–30 cm × 2–3 mm.

heads digitate, 15–30(–36) mm diam.;

rays (14–)20–22, (2–)5–12(–20) cm; 2d order rays 0.3–3(–4) cm; 3d order rays sometimes present, 0.3–2.5 cm;

bracts (4–)18–22, ± horizontal, flat, 15–27 cm × (1.5–)8–12 mm.

heads digitate, 12–20 mm diam.;

rays 7–12, 1–13 cm; 2d order rays 1–3 cm (sometimes absent);

bracts 3–5, longest ± erect, V-shaped, 5–12(–18) cm × 2–3 mm.

8–20, ovoid to linear-lanceoloid, compressed, 5–25 × 1.5–2 mm;

floral scales 8–28, laterally whitish or light brown, ± hyaline, medially light brown, laterally ribless, medially 3-ribbed, 2-keeled in proximal 30–60%, deltate-ovate, 1.6–2.4 × (1–)1.2–1.5(–1.7) mm, apex acute.

(8–)20–30, linear-lanceoloid, compressed, 5–10(–14) × 1.4–1.7 mm;

floral scales (8–)16–26, laterally brown to reddish brown, medially green, laterally 1-ribbed, medially 3-ribbed, broadly elliptic, 2–2.5 × 1.2–1.6 mm, apex with slightly excurved cusp 0.2–0.3 mm.

stamens 3;

anthers 0.7–1 mm;

styles 0.5–1 mm;

stigmas 0.6–1 mm.

stamens 3;

anthers 1 mm, connective apex reddish, subulate, 0.1 mm;

styles 1–1.5 mm;

stigmas 1.5 mm.

brown, sessile or stipitate, broadly ellipsoid, 0.6–0.8 × 0.4–0.6 mm, stipe if present to 0.1 mm, apex obtuse, apiculate, surfaces puncticulate.

white to light brown, sessile, ellipsoid, 0.7–0.8 × 0.25–0.35 mm, apex obtuse, apiculate, surfaces puncticulate.