Flora of North America species comparison

trigonous, 20–100 cm × 0.8–2.5 mm, glabrous.

trigonous, (10–)20–50 cm × (0.6–)1–2 mm, glabrous or more often scabridulous, either in distal 1/2 or over entire length;

basal sheaths, 1–3, light brown, 1–4 cm, papery.

5–10, V-shaped to flanged V-shaped, 10–70(–90) cm × 2–7 mm, margins and midribs scabridulous or glabrous.

flat to V-shaped, (2–)20–35 cm × 2–6 mm, margins and keel minutely scabridulous;

proximal leaves bladeless.

spikes 1(–6), densely cylindric, 6–30 × 5–11 mm;

rays 3–12, 0.4–5(–7) cm;

rays and rachis glabrous; usually only 1–2 spikes of inflorescence on elongate rays, other spikes sessile or nearly so;

bracts 4–7, horizontal to slightly ascending, 1–16 cm × 0.5–4 mm;

rachilla deciduous, wings persistent, 0.5 mm wide.

spikes ± umbellate to slenderly (infrequently broadly) ovoid, 10–25 × 7–16 mm;

rays 3–5, 1.5–8(–15) cm;

bracts 3–7, erect (or declined at most 25–30° from vertical), (2.5–)8–20(–25) cm × (0.5–)1.5–6 mm;

rachilla ± deciduous, wingless.

20–80, ellipsoid, roughly quadrangular, 3–5 × 1–1.4 mm;

floral scales 1–2(–4), appressed, stramineous to golden brown, often red-speckled, medially greenish, 9-ribbed, elliptic to ovate, 2.4–3.4 × 1.8–2.6 mm, apex obtuse.

(1–)5–10(–20), oblong to linear-oblong, quadrangular, 7–10(–18) × (2.8–)3.2–4(–4.5) mm;

floral scales deciduous, (1–)5–10(–14), spreading, laterally stramineous or dull whitish, sometimes also red-spotted, medially green, laterally 2–3-ribbed, medially 3-ribbed, broadly ovate to oblong-ovate, (2.3–)2.8–3.2 × (2–)2.4–3.2 mm, apex broadly rounded, often clear-erose, cusp 0.1–0.4 mm in proximal scales, 0.3–1 mm in distal scales.

anthers 0.4–0.6 mm;

styles 0.7–1.1 mm;

stigmas 1.4–2.1 mm.

anthers 0.8–1.4 mm;

styles 0.1–0.3 mm;

stigmas 1.5–3 mm.

dark brown to reddish brown, sessile, broadly ellipsoid, 1.8–2.1 × 0.8–1 mm, apex apiculate, surfaces glabrous to finely puncticulate.

light to dark brown or nearly black, broadly ellipsoid, infrequently obovoid, 2–2.4 × 0.9–1.4 mm, base cuneate to ± stipelike, apex obtuse to broadly rounded, surfaces papillose.

= 166.