Flora of North America species comparison

trigonous to roundly trigonous, (0.5–)5–25(–105) cm × 1–2.5(–7.5) mm, glabrous.

trigonous, 5–50 cm × 0.4–2 mm, glabrous.

flat to inversely W-shaped, 5–25(–90) cm × 2–5(–11) mm.

flat, 10–30 cm × 1–3 mm.

spikes 1–3(–6), rather densely cylindric-ovoid, (4–)10–30(–45) × (6–)10–16(–23) mm;

rays 2–6(–12), 1–8(–28) cm;

bracts (3–)5–7(–11), horizontal to ascending at 30°, inversely W-shaped, (3–)10–20(–70) cm × 1–3(–12) mm;

rachilla persistent, at maturity becoming laterally free, remaining firmly attached proximally, wings 0.3(–0.4) mm wide.

heads loosely globose, 10–22 mm diam.;

rays 0–6, 1–7 cm;

bracts 3–6, horizontal to slightly ascending, flat, 3–26 cm × 1–3 mm.

(20–)40–80, linear, quadrangular, 3–8(–11) × 1–1.5 mm;

floral scales deciduous, 6–16(–30), appressed, laterally light brown with reddish speckles, medially greenish, laterally ribless, medially 3-ribbed, oblong-ovate to obovate, quadrangular to subterete, 1.3–1.5 × 0.8–1.2 mm, apex obtuse, mucronulate.

6–20, linear-lanceoloid, compressed, 7–30 × 2–3 mm;

floral scales 8–28, stramineous to light reddish brown, laterally ribless, ovate, 2.7–3.6 × 1.6–1.8 mm.

anthers 0.2–0.3 mm, connectives 0.1 mm;

styles 0.7–0.8 mm;

stigmas 0.4 mm.

stamens 2;

anthers 0.5 mm, connective apex reddish, subulate, 0.1–0.2 mm;

styles 1.9–2.1 mm;

stigmas 1–1.3 mm.

light grayish to brown, sessile, ovoid, (0.4–)0.7–1 × 0.4–0.6 mm, apex rounded, apiculate, surfaces glabrous.

brown, oblong, 1.2–1.6 × 0.6–0.9 mm, base cuneate to ± stipelike, apex obtuse, apiculate, surfaces minutely punctate.