Flora of North America species comparison

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

basally cormlike, trigonous, (10–)20–80 cm × 1–3 mm, glabrous.

inversely W-shaped, 20–70 cm × 5–11 mm, adaxial surface, margins minutely scabridulous.

spikes loosely ovoid, 15–25 mm wide;

rays 1–6, 2–7 cm;

bracts 2–5, 3–20 cm, ascending;

rachilla deciduous, winged.

spikes densely ellipsoid to obovoid, 2.5–4.3 × 1.5–3 cm;

rays 5–10, 4–20 cm, glabrous;

rachis 7–14 mm;

bracts 3–8, horizontal to ascending at 45°, flat, 5–35 cm × 2.5–6 mm;

rachilla persistent, wings 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.

50–90, linear-lanceoloid to linear-subulate, ± terete-quadrangular, (11–)12–13(–15) × 1.1–1.6 mm;

distal spikelet spreading or ascending;

floral scales persistent, 3–6(–8), appressed, whitish green or often yellow-tinted, sometimes reddish striate, laterally 4-ribbed, ovate-lanceolate, (3.9–)4.2–4.6(–4.8) × 1.6–2 mm.

anthers 0.3–0.4 mm;

styles 1 mm;

stigmas 1.3–1.6 mm.

anthers 0.7–1 mm;

styles 1–1.5 mm;

stigmas 2–3 mm.

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

yellowish brown to brown, ± stipitate, conspicuously falcate, 3–4 times long as wide, oblong, 2.2–2.6 × 0.6–0.7 mm, apex obtuse, surfaces puncticulate.